View mc74hct161a datasheet:

MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC54/74HCT161A Presettable Counters MC54/74HCT163A 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. J SUFFIX The HCT161A and HCT163A are programmable 4–bit binary counters with CERAMIC PACKAGE 16 asynchronous and synchronous reset, respectively. CASE 620–10 1 • Output Drive Capability: 10 LSTTL Loads • TTL, NMOS Compatible Input Levels N SUFFIX PLASTIC PACKAGE • Outputs Directly Interface to CMOS, NMOS, and TTL 16 CASE 648–08 • Operating Voltage Range: 4.5 to 5.5 V 1 • Low Input Current: 1 µA • High Noise Immunity Characteristic of CMOS Devices D SUFFIX