Presettable Counters

High–Performance Silicon–Gate CMOS

The MC54/74HCT161A and HCT163A are identical in pinout to the LS161A and LS163A. These devices may be used as level converters for interfacing TTL or NMOS outputs to high speed CMOS inputs.

The HCT161A and HCT163A are programmable 4–bit binary counters with asynchronous and synchronous reset, respectively.

• Output Drive Capability: 10 LSTTL Loads

• TTL, NMOS Compatible Input Levels

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 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: 200 FETs or 50 Equivalent Gates