View mc74hc273a datasheet:

MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC54/74HC273A Octal D Flip-Flop with Common Clock and Reset High–Performance Silicon–Gate CMOS J SUFFIX CERAMIC PACKAGE 20 The MC54/74HC273A is identical in pinout to the LS273. The device CASE 732–03 1 inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device consists of eight D flip–flops with common Clock and Reset N SUFFIX inputs. Each flip–flop is loaded with a low–to–high transition of the Clock PLASTIC PACKAGE input. Reset is asynchronous and active low. 20 CASE 738–03 1 • Output Drive Capability: 10 LSTTL Loads • Outputs Directly Interface to CMOS, NMOS and TTL DW SUFFIX 20 • Operating Voltage Range: 2.0 to 6.0 V SOIC PACKAGE 1 CASE 751D–04 • Low Inpu