CY74FCT257ATDRE4 - Texas Instruments

CY74FCT257T

QUAD 2-INPUT MULTIPLEXER

WITH 3-STATE OUTPUTS

SCCS019D − MAY 1994 − REVISED NOVEMBER 2001

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

DFunction, Pinout, and Drive Compatible

With FCT and F Logic

DReduced VOH (Typically = 3.3 V) Version of

Equivalent FCT Functions

DEdge-Rate Control Circuitry for

Significantly Improved Noise

Characteristics

DIoff Supports Partial-Power-Down Mode

Operation

DMatched Rise and Fall Times

DFully Compatible With TTL Input and

Output Logic Levels

DESD Protection Exceeds JESD 22

− 2000-V Human-Body Model (A114-A)

− 200-V Machine Model (A115-A)

− 1000-V Charged-Device Model (C101)

D64-mA Output Sink Current

32-mA Output Source Current

D3-State Outputs

description

The CY74FCT257T has four identical two-input multiplexers that select four bits of data from two sources under

the control of a common data-select (S) input. The I0 inputs are selected when S is low, and the I1 inputs are

selected when S is high. Data at the output is noninverted.

The CY74FCT257T is a logic implementation of a four-pole, two-position switch, where the position of the switch

is determined by the logic levels at S. Outputs are in the high-impedance state when the output-enable (OE)

input is high.

All but one device must be in the high-impedance state to avoid currents exceeding the maximum ratings if

outputs are tied together. OE inputs must ensure that there is no overlap when outputs of 3-state devices are

tied together.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,

preventing damaging current backflow through the device when it is powered down.

PIN DESCRIPTION

NAME DESCRIPTION

IData inputs

SCommon data-select input

OE Output-enable input (active low)

YData outputs

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

I0a

I1a

I0b

I1b

GND

VCC

I0c

I1c

I0d

I1d

Q OR SO PACKAGE

(TOP VIEW)

CY74FCT257T

QUAD 2-INPUT MULTIPLEXER

WITH 3-STATE OUTPUTS

SCCS019D − MAY 1994 − REVISED NOVEMBER 2001

2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ORDERING INFORMATION

TAPACKAGE†SPEED

(ns)

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

QSOP − Q Tape and reel 4.3 CY74FCT257CTQCT FT257-3

SOIC SO

Tube 4.3 CY74FCT257CTSOC

FCT257C

−40°C to 85°CSOIC − SO Tape and reel 4.3 CY74FCT257CTSOCT FCT257C

QSOP − Q Tape and reel 5 CY74FCT257ATQCT FT257-1

QSOP − Q Tape and reel 6 CY74FCT257TQCT FT257

†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

FUNCTION TABLE

INPUTS OUTPUT

OE S I0I1

OUTPUT

H X X X Z

LHXL L

LHXH H

LLLX L

L L H X H

H = High logic level, L = Low logic level,

X = Don’t care, Z = High-impedance state

logic diagram

I0a

I1a

I0b

I1b

I0c

I1c

I0d

I1d

CY74FCT257T

QUAD 2-INPUT MULTIPLEXER

WITH 3-STATE OUTPUTS

SCCS019D − MAY 1994 − REVISED NOVEMBER 2001

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage range to ground potential −0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC input voltage range −0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC output voltage range −0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DC output current (maximum sink current/pin) 120 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance, θJA (see Note 1): Q package 90°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SO package 57°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ambient temperature range with power applied, TA −65°C to 135°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg −65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: The package thermal impedance is calculated in accordance with JESD 51-7.

recommended operating conditions (see Note 2)

MIN NOM MAX UNIT

VCC Supply voltage 4.75 5 5.25 V

VIH High-level input voltage 2 V

VIL Low-level input voltage 0.8 V

IOH High-level output current −32 mA

IOL Low-level output current 64 mA

TAOperating free-air temperature −40 85 °C

NOTE 2: All unused inputs of the device must be held at VCC or GND to ensure proper device operation.

CY74FCT257T

QUAD 2-INPUT MULTIPLEXER

WITH 3-STATE OUTPUTS

SCCS019D − MAY 1994 − REVISED NOVEMBER 2001

4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT

VIK VCC = 4.75, IIN = −18 mA −0.7 −1.2 V

VOH VCC = 4.75, IOH = −32 mA 2 V

VOL VCC = 4.75, IOL = 64 mA 0.3 0.55 V

Vhys All inputs 0.2 V

IIVCC = 5.25 V, VIN = 5.25 V 5μA

IIH VCC = 5.25 V, VIN = 2.7 V ±1μA

IIL VCC = 5.25 V, VIN = 0.5 V ±1μA

IOZH VCC = 5.25 V, VOUT = 2.7 V 10 μA

IOZL VCC = 5.25 V, VOUT = 0.5 V −10 μA

IOS‡VCC = 5.25 V, VOUT = 0 V −60 −120 −225 mA

Ioff VCC = 0 V, VOUT = 4.5 V ±1μA

ICC VCC = 5.25 V, VIN ≤ 0.2 V, VIN ≥VCC − 0.2 V 0.1 0.2 mA

ΔICC VCC = 5.25 V, VIN = 3.4 V§, f1 = 0, Outputs open 0.5 2 mA

ICCD¶VCC = 5.25 V, One input switching at 50% duty cycle, Outputs open,

OE = GND, VIN ≤0.2 V or VIN ≥VCC − 0.2 V 0.06 0.12 mA/

MHz

One input switching

at f

= 10 MHz

VIN ≤0.2 V or

VIN ≥VCC − 0.2 V 0.7 1.4

VCC = 5.25 V,

Outputs open

MHz

at 50% duty cycle VIN = 3.4 V or GND 1 2.4

IC#Outputs open,

OE = GND Four bits switching

at f

= 2.5 MHz

VIN ≤0.2 V or

VIN ≥VCC − 0.2 V 0.7 1.4||

MHz

at 50% duty cycle VIN = 3.4 V or GND 1.7 5.4||

Ci5 10 pF

Co9 12 pF

†Typical values are at VCC = 5 V, TA = 25°C.

‡Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus

and/or sample-and-hold techniques are preferable to minimize internal chip heating and more accurately reflect operational values. Otherwise,

prolonged shorting of a high output can raise the chip temperature well above normal and cause invalid readings in other parametric tests. In

any sequence of parameter tests, IOS tests should be performed last.

§Per TTL-driven input (VIN = 3.4 V); all other inputs at VCC or GND

¶This parameter is derived for use in total power-supply calculations.

#IC= ICC + ΔICC × DH × NT + ICCD(f0/2 + f1 × N1)

Where:

IC= Total supply current

ICC = Power-supply current with CMOS input levels

ΔICC = Power-supply current for a TTL high input (VIN = 3.4 V)

DH= Duty cycle for TTL inputs high

NT= Number of TTL inputs at DH

ICCD = Dynamic current caused by an input transition pair (HLH or LHL)

f0= Clock frequency for registered devices, otherwise zero

f1= Input signal frequency

N1= Number of inputs changing at f1

All currents are in milliamperes and all frequencies are in megahertz.

|| Values for these conditions are examples of the ICC formula.

CY74FCT257T

QUAD 2-INPUT MULTIPLEXER

WITH 3-STATE OUTPUTS

SCCS019D − MAY 1994 − REVISED NOVEMBER 2001

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

switching characteristics over operating free-air temperature range (see Figure 1)

PARAMETER

FROM TO CY74FCT257T CY74FCT257AT CY74FCT257CT

UNIT

PARAMETER

FROM

(INPUT)

(OUTPUT) MIN MAX MIN MAX MIN MAX UNIT

tPLH

1.5 6 1.5 5 1.5 4.3

tPHL

I Y 1.5 6 1.5 5 1.5 4.3 ns

tPLH

1.5 10.5 1.5 7 1.5 5.2

tPHL

S Y 1.5 10.5 1.5 7 1.5 5.2 ns

tPZH

1.5 8.5 1.5 7 1.5 6

tPZL

OE Y1.5 8.5 1.5 7 1.5 6 ns

tPHZ

1.5 6 1.5 5.5 1.5 5

tPLZ

OE Y1.5 6 1.5 5.5 1.5 5 ns

CY74FCT257T

QUAD 2-INPUT MULTIPLEXER

WITH 3-STATE OUTPUTS

SCCS019D − MAY 1994 − REVISED NOVEMBER 2001

6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PARAMETER MEASUREMENT INFORMATION

3 V

0 V

tsu

VOLTAGE WAVEFORMS

SETUP AND HOLD TIMES

Data Input

tPLH

tPHL

tPLH

VOH

VOL

3 V

0 V

Input

Out-of-Phase

Output

In-Phase

Output

Timing Input

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

INVERTING AND NONINVERTING OUTPUTS

Output

Control

Output

Waveform 1

(see Note B)

Output

Waveform 2

(see Note B)

VOL

VOH

tPZL

tPZH

tPLZ

tPHZ

≈3.5 V

0 V

VOL + 0.3 V

≈0 V

3 V

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

LOW- AND HIGH-LEVEL ENABLING

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

Open

7 V

Open

TEST S1

3 V

0 V

VOLTAGE WAVEFORMS

PULSE DURATION

Input

NOTES: A. CL includes probe and jig capacitance.

B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.

C. The outputs are measured one at a time with one input transition per measurement.

From Output

Under Test

CL = 50 pF

(see Note A)

LOAD CIRCUIT FOR

3-STATE OUTPUTS

7 V

500 Ω

GND

From Output

Under Test

CL = 50 pF

(see Note A)

Test

Point

LOAD CIRCUIT FOR

TOTEM-POLE OUTPUTS

Open

VOH − 0.3 V

500 Ω

1.5 V1.5 V

1.5 V 1.5 V

1.5 V

1.5 V1.5 V

1.5 V 1.5 V

1.5 V

Figure 1. Load Circuit and Voltage Waveforms

PACKAGE OPTION ADDENDUM

www.ti.com 17-Aug-2012

Addendum-Page 1

PACKAGING INFORMATION

Orderable Device Status (1) Package Type Package

Drawing Pins Package Qty Eco Plan (2) Lead/

Ball Finish MSL Peak Temp (3) Samples

(Requires Login)

CY74FCT257ATD ACTIVE SOIC D 16 40 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257ATDE4 ACTIVE SOIC D 16 40 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257ATDG4 ACTIVE SOIC D 16 40 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257ATDR ACTIVE SOIC D 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257ATDRE4 ACTIVE SOIC D 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257ATDRG4 ACTIVE SOIC D 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257ATQCT ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

CY74FCT257ATQCTE4 ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

CY74FCT257ATQCTG4 ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

CY74FCT257CTDR ACTIVE SOIC D 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257CTDRE4 ACTIVE SOIC D 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257CTDRG4 ACTIVE SOIC D 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257CTQCT ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

CY74FCT257CTQCTE4 ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

CY74FCT257CTQCTG4 ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

CY74FCT257CTSOC ACTIVE SOIC DW 16 40 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257CTSOCE4 ACTIVE SOIC DW 16 40 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

PACKAGE OPTION ADDENDUM

www.ti.com 17-Aug-2012

Addendum-Page 2

Orderable Device Status (1) Package Type Package

Drawing Pins Package Qty Eco Plan (2) Lead/

Ball Finish MSL Peak Temp (3) Samples

(Requires Login)

CY74FCT257CTSOCG4 ACTIVE SOIC DW 16 40 Green (RoHS

& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM

CY74FCT257CTSOCT ACTIVE SOIC DW 16 TBD Call TI Call TI

CY74FCT257CTSOCTE4 ACTIVE SOIC DW 16 TBD Call TI Call TI

CY74FCT257CTSOCTG4 ACTIVE SOIC DW 16 TBD Call TI Call TI

CY74FCT257TQCT ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

CY74FCT257TQCTE4 ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

CY74FCT257TQCTG4 ACTIVE SSOP DBQ 16 2500 Green (RoHS

& no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR

(1) The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability

information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that

lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between

the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight

in homogeneous material)

(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information

provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and

continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.

TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device Package

Type Package

Drawing Pins SPQ Reel

Diameter

(mm)

Reel

Width

W1 (mm)

(mm) B0

(mm) K0

(mm) P1

(mm) W

(mm) Pin1

Quadrant

CY74FCT257ATDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1

CY74FCT257CTDR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1

PACKAGE MATERIALS INFORMATION

www.ti.com 17-Aug-2012

Pack Materials-Page 1

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

CY74FCT257ATDR SOIC D 16 2500 333.2 345.9 28.6

CY74FCT257CTDR SOIC D 16 2500 333.2 345.9 28.6

PACKAGE MATERIALS INFORMATION

www.ti.com 17-Aug-2012

Pack Materials-Page 2

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