8âBit SerialâInput/ParallelâOutput Shift Register
HighâPerformance SiliconâGate CMOS
The MC54/74HC164A is identical in pinout to the LS164. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.
The MC54/74HC164A is an 8âbit, serialâinput to parallelâoutput shift register. Two serial data inputs, A1 and A2, are provided so that one input may be used as a data enable. Data is entered on each rising edge of the clock. The activeâlow asynchronous Reset overrides the Clock and Serial Data inputs.
⢠Output Drive Capability: 10 LSTTL Loads
⢠Outputs Directly Interface to CMOS, NMOS, and TTL
⢠Operating Voltage Range: 2 to 6 V
⢠Low Input Current: 1 µA
⢠High Noise Immunity Characteristic of CMOS Devices
⢠In Compliance with the Requirements Defined by JEDEC Standard No. 7A
⢠Chip Complexity: 244 FETs or 61 Equivalent Gates
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