Datasheet

1. General description
The 74HC73 is a high-speed Si-gate CMOS device that complies with JEDEC
standard no. 7A. It is pin compatible with Low-power Schottky TTL (LSTTL).
The 74HC73 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
n Low-power dissipation
n Complies with JEDEC standard no. 7A
n ESD protection:
u HBM JESD22-A114E exceeds 2000 V
u MM JESD22-A115-A exceeds 200 V
n Multiple package options
n Specified from −40 °Cto+80°C and from −40 °C to +125 °C
3. Ordering information
74HC73
Dual JK flip-flop with reset; negative-edge trigger
Rev. 04 — 19 March 2008 Product data sheet
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74HC73N −40 °C to +125 °C DIP14 plastic dual in-line package; 14 leads (300 mil) SOT27-1
74HC73D −40 °C to +125 °C SO14 plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
74HC73DB −40 °C to +125 °C SSOP14 plastic shrink small outline package; 14 leads; body width
5.3 mm
SOT337-1
74HC73PW −40 °C to +125 °C TSSOP14 plastic thin shrink small outline package; 14 leads; body
width 4.4 mm
SOT402-1