NOT RECOMMENDED FOR NEW DESIGNS DS1220Y
7 of 9
6. If the CE low transition occurs simultaneously with or later than the WE low transition in write
cycle 1, the output buffers remain in a high impedance state during this period.
7. If the CE high transition occurs prior to or simultaneously with the WE high transition, the output
buffers remain in a high impedance state during this period.
8. If WE is low or the WE low transition occurs prior to or simultaneously with the CE low transition,
the output buffers remain in a high impedance state during this period.
9. Each DS1220Y is marked with a 4-digit date code AABB. AA designates the year of manufacture.
BB designates the week of manufacture. The expected tDR is defined as starting at the date of
manufacture.
10. All AC and DC electrical characteristics are valid over the full operating temperature range. For
commercial products, this range is 0°C to 70°C. For industrial products (IND), this range is -40°C to
+85°C.
11. In a power-down condition the voltage on any pin may not exceed the voltage of VCC .
12. tWR1 , tDH1 are measured from WE going high.
13. tWR2 , tDH2 are measured from CE going high.
14. DS1220Y modules are recognized by Underwriters Laboratories (UL®) under file E99151 (R).
DC TEST CONDITIONS
Outputs open.
All voltages are referenced to ground.
AC TEST CONDITIONS
Output Load: 100pF + 1TTL Gate
Input Pulse Levels: 0-3.0V
Timing Measurement Reference Levels
Input:1.5V
Output: 1.5V
Input Pulse Rise and Fall Times: 5ns
ORDERING INFORMATION/SELECTOR GUIDE
PART TEMP RANGE SUPPLY
TOLERANCE PIN-PACKAGE SPEED GRADE
(ns)
DS1220Y-100 0°C to +70°C 5V ± 10% 24 / 720 EMOD 100
DS1220Y-100+ 0°C to +70°C 5V ± 10% 24 / 720 EMOD 100
DS1220Y-100IND -40°C to +85°C 5V ± 10% 24 / 720 EMOD 100
DS1220Y-100IND+ -40°C to +85°C 5V ± 10% 24 / 720 EMOD 100
DS1220Y-120 0°C to +70°C 5V ± 10% 24 / 720 EMOD 120
DS1220Y-120+ 0°C to +70°C 5V ± 10% 24 / 720 EMOD 120
DS1220Y-150 0°C to +70°C 5V ± 10% 24 / 720 EMOD 150
DS1220Y-150+ 0°C to +70°C 5V ± 10% 24 / 720 EMOD 150
DS1220Y-200 0°C to +70°C 5V ± 10% 24 / 720 EMOD 200
DS1220Y-200+ 0°C to +70°C 5V ± 10% 24 / 720 EMOD 200
DS1220Y-200IND -40°C to +85°C 5V ± 10% 24 / 720 EMOD 200
DS1220Y-200IND+ -40°C to +85°C 5V ± 10% 24 / 720 EMOD 200
+ Denotes a lead-free/RoHS-compliant package.