logic

74HC164

Full part number: 74HC164BQ

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This datasheet covers the 74HC164 and 74HCT164, an 8-bit serial-in/parallel-out shift register available in multiple packages. It details electrical characteristics, pinouts, and ordering information for industrial temperature ranges. Key parameters include a wide supply voltage range of 2.0 to 6.0 V, CMOS low power dissipation, high noise immunity, and asynchronous master reset functionality. The device features gated serial data inputs with active HIGH enable logic, ensuring robust performance across various applications.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	100 µA	360 µA	per input pin; VI = VCC- 2.1 V; IO = 0 A; other inputs at VCCor GND; VCC = 4.5 V to 5.5 V
output current	—	20 mA	—
supply voltage range	2 V	5 V	6 V
operating temperature	-40 °C	25 °C	125 °C
power dissipation	—	—	500 mW	[2]
input capacitance	—	3.5 pF	—
propagation delay	—	41 ns	170 ns	VCC = 2.0 V
output voltage high	1.9 V	2 V	—	IO = -20 μA; VCC = 2.0 V
output voltage low	—	0 V	100 mV	IO = 20 μA; VCC = 2.0 V

03 — Alternatives

Closest matches to 74HC164

74HC595D 1.8× higher output current, 1.5× higher quiescent current, 1.3× higher propagation delay

74HCT595BQ 1.8× higher output current, 1.6× lower propagation delay, 1.5× higher quiescent current

74HC14BQ 3.3× lower quiescent current, 1.2× higher output current, similar input capacitance

74HCT165BQ 2.9× lower quiescent current, 1.7× higher operating temperature, 1.3× higher propagation delay

74LVC245A 6.3× lower propagation delay, 2.5× higher output current, 1.9× lower supply voltage range

74LVC2G14GM 7.3× lower propagation delay, 2.5× higher output current, 2.0× lower power dissipation

NL17SZ125 4.6× lower propagation delay, 3.3× lower power dissipation, 1.6× higher output current

NC7WZ17 4.9× lower propagation delay, 2.8× lower power dissipation, 1.4× lower input capacitance

04 — FAQ

Frequently asked questions

What is the input capacitance of the 74HC164BQ?

The input capacitance is 3.5 pF.

What is the operating temperature specified for the 74HC164BQ?

The operating temperature is 25 °C.

What is the maximum output current for the 74HC164BQ?

The output current is 20 mA.

What is the output voltage high when IO = -20 μA and VCC = 2.0 V?

The output voltage high is 2 V.

What is the output voltage low when IO = 20 μA and VCC = 2.0 V?

The output voltage low is 0 V when IO = 20 μA and VCC = 2.0 V.

What is the power dissipation of the 74HC164BQ under condition [2]?

The power dissipation is 500 mW.

What is the propagation delay of the 74HC164BQ when VCC = 2.0 V?

The propagation delay is 41 ns at VCC = 2.0 V.

What is the quiescent current per input pin when VI = VCC- 2.1 V, IO = 0 A, other inputs at VCC or GND, and VCC = 4.5 V to 5.5 V?

The quiescent current is 100 µA per input pin under the specified conditions.

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