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74LS189 64-Bit RAM
High speed 64-bit RAM with 16-word by 4-bit array organization.
- Symbol Parameter: Min Max Units Conditions
- VOL Output Low Voltage: 0.4 0.5 V VCC= Min lOL = 16 mA (S189) XC lOL = 16 mA (74LS189)
- VOH Output High Voltage: 2.8 2.8 V VCC= Min lOL = 0.4 mA (LS189) XC lOL = 6.5 mA (74LS189)
- IOS Output Short Circuit Current: -80 mA Vcc = Max
- ICC Power Supply Current: 40 mA Vcc = Max; WE, CS, Gnd
Features:
- 3-State Outputs For Data Bus Applications
- Buffered Inputs Minimize Loading
- Address Decoding On-Chip
- Diode Clamped Inputs Minimize Ringing
The 74LS189 is a high-speed 64-bit RAM organized as a 16-word by 4-bit array. Address inputs are buffered to minimize loading and are fully decoded on-chip. The outputs are 3-state and are in the high impedance state whenever the Chip Select (CS) input is HIGH. The outputs are active only in the Read mode and the output data is the complement of the stored data.
Related Document: 74LS189 IC Datasheet
Images are for illustration only; actual product may vary.