The MC74HC173 is identical in pinout to the LS173. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. Data, when enabled, are clocked into the four D flip–flops with the rising edge of the common Clock. When either or both of the Output Enable
Controls is high, the outputs are in a high–impedance state. This feature allows the MC74HC173 to be used in bus–oriented systems. The Reset feature is asynchronous and active high.
Output Drive Capability: 15 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
Low Input Current: 1 mA
High Noise Immunity Characteristic of CMOS Devices
Chip Complexity 208 FETs or 52 Equivalent Gates
16 pin DIP. Manufactured by Motorola.