SN54HC595 — Datasheet Summary, Specs & Alternatives

01 — Overview

This TI datasheet covers the SN74HC595 and SN54HC595, which are 8-bit serial-in, parallel-out shift registers with 3-state outputs. The document details their electrical specifications, pin configurations, timing requirements, and functional modes for logic design applications. Key parameters include a wide operating voltage range of 2 to 6 V, low power consumption of 80 μA maximum, and high-current outputs capable of driving up to 15 LSTTL loads. These devices feature separate clocks for the shift and storage registers, allowing flexible data movement and storage in network switches, LED displays, and servers.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	160 µA	—	VI = VCCor 0, IO = 0; 6 V
output current	—	6 mA	—
supply voltage range	2 V	5 V	6 V
operating temperature	-55 °C	—	125 °C
clock frequency	—	—	6 MHz	2 V; 5
propagation delay	—	—	240 ns	50; 160
output voltage high	1.9 V	—	1.9 V	VI = VIHor VIL; IOH = -20 μA; 2 V; 1.9
output voltage low	—	100 mV	—	VI = VIHor VIL; IOL = 20 μA; 2 V

03 — Alternatives

Closest matches to SN54HC595

MC74HC165A 2.0× lower quiescent current, 1.4× lower propagation delay, 1.2× lower supply voltage range

74HC595D 9.2× higher clock frequency, 5.8× higher output current, 4.6× lower propagation delay

74HC164BQ 5.9× lower propagation delay, 3.3× higher output current, 1.6× lower quiescent current

74HCT595BQ 9.6× lower propagation delay, 5.8× higher output current, 1.4× lower operating temperature

74LVC245A 8.3× higher output current, 2.0× higher output voltage low, 1.9× lower supply voltage range

74LVC2G14GM 8.3× higher output current, 1.6× lower output voltage high, 1.4× lower supply voltage range

NC7WZ17 1.6× lower operating temperature, 1.4× lower supply voltage range, 1.2× lower output voltage low

NL17SZ08 8.3× higher output current, 1.4× lower supply voltage range, 1.4× lower output voltage high

04 — FAQ

Frequently asked questions

What is the clock frequency at 2 V?

The clock frequency is 6 MHz at 2 V.

What is the maximum operating temperature for the SN54HC595?

The maximum operating temperature is 125 °C.

What is the output current specification for the SN54HC595?

The output current is 6 mA.

What is the output voltage high when VI = VIH or VIL, IOH = -20 μA, and VCC = 2 V?

The output voltage high is 1.9 V.

What is the output voltage low when VI = VIHor VIL, IOL = 20 μA, and the supply voltage is 2 V?

The output voltage low is 100 mV.

What is the propagation delay of the SN54HC595?

The propagation delay is 240 ns at 50; 160.

What is the quiescent current when VI = VCC or 0, IO = 0, and VCC = 6 V?

The quiescent current is 160 µA.

What is the supply voltage range for the SN54HC595?

The supply voltage range is 5 V.