74ALS74A

Pinout




Specifications

SYMBOL	PARAMETER	RATING	UNIT
VCC	Supply voltage	0.5 to +7.0	V
VIN	Input voltage	0.5 to +7.0	V
IIN	Input current	30 to +5	mA
VOUT	Voltage applied to output in High output state	0.5 to VCC	V
IOUT	Current applied to output in Low output state	16	mA
Tamb	Operating free-air temperature range	0 to +70	°C
Tstg	Storage temperature range	65 to +150	°C

Description

The 74ALS74A is a dual positive edge-triggered D-type flip-flop featuring individual data, clock, set, and reset inputs; also true and complementary outputs. Set (SD) and reset (RD) are asynchronous active-Low inputs and operate independently of the clock input.

When set and reset are inactive (High), data at the D input is transferred to the Q and Q outputs on the Low-to-High transition of the clock. Data of the 74ALS74A must be stable just one setup time prior to the Low-to-High transition of the clock for predictable operation. Clock triggering occurs at a voltage level and is not directly related to the transition time of the positive-going pulse. Following the hold time interval, data at the D input may be changed without affecting the levels of the output.