1. General description
The 74HC73 is a high-speed Si-gate CMOS device and is pin compatible with low-power
Schottky TTL (LSTTL). The 74HC73 is specified in compliance with JEDEC
standard no. 7A.
The 74HC is a dual negative-edge triggered JK flip-flop featuring individual J, K, clock
(nCP) and reset (nR) inputs; also complementary nQ and nQ outputs.
The J and K inputs must be stable one set-up time prior to the HIGH-to-LOW clock
transition for predictable operation.
The reset (nR) is an asynchronous active LOW input. When LOW, it overrides the clock
and data inputs, forcing the nQ output LOW and the nQ output HIGH.
Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock
rise and fall times.
2. Features
a73 Low-power dissipation
a73 Complies with JEDEC standard no. 7A
a73 ESD protection:
a78 HBM EIA/JESD22-A114-B exceeds 2000 V
a78 MM EIA/JESD22-A115-A exceeds 200 V.
a73 Multiple package options
a73 Specified from −40 °Cto+80°C and from −40 °C to +125 °C.
74HC73
Dual JK flip-flop with reset; negative-edge trigger
Rev. 03 — 12 November 2004 Product data sheet