MC74HC165A — Datasheet Summary, Specs & Alternatives

01 — Overview

This datasheet covers the MC74HC165A and MC74HC165D, an 8-bit serial or parallel-input/serial-output shift register from Onsemi. The document defines electrical characteristics for logic applications operating at 2.0 to 6.0 V with high noise immunity. Key parameters include a supply voltage range of 2.0-6.0 V, output drive capability of 10 LSTTL loads, low input current of 1 uA, and a maximum DC supply current of 50 mA per pin. It also details pin assignments, function tables, and maximum ratings for various packages.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	4 µA	—	160 µA	Vin = VCCor GNDIout = 0 μA; 6.0
output current	-25 mA	—	25 mA
supply voltage range	2 V	—	6 V	V
operating temperature	-55 °C	—	125 °C	°C
input capacitance	10 pF	—	10 pF	–
propagation delay	150 ns	—	190 ns	2.0
rise time	1 µs	—	1 µs	2.0; 1000
output voltage high	1.9 V	—	1.9 V	Vin = VIHor VIL\|Iout\| ≤ 20 μA; 2.0
output voltage low	100 mV	—	100 mV	Vin = VIHor VIL\|Iout\| ≤ 20 μA; 2.0

03 — Alternatives

Closest matches to MC74HC165A

SN54HC595 2.0× higher quiescent current, 1.4× higher propagation delay, 1.2× higher supply voltage range

74HC595D 3.3× lower propagation delay, 2.9× lower input capacitance, 1.8× higher quiescent current

74HC164BQ 4.1× lower propagation delay, 2.9× lower input capacitance, 1.4× lower operating temperature

74HCT595BQ 6.8× lower propagation delay, 2.9× lower input capacitance, 1.8× higher quiescent current

74LVC245A 2.5× lower input capacitance, 2.0× higher output voltage low, 1.6× lower output voltage high

74LVC2G14GM 2.9× lower input capacitance, 1.6× lower output voltage high, 1.2× higher operating temperature

NC7WZ17 4.0× lower input capacitance, 1.6× lower operating temperature, 1.2× lower output voltage low

NL17SZ08 4.0× lower input capacitance, 1.4× lower output voltage high, 1.2× lower output voltage low

04 — FAQ

Frequently asked questions

What is the input capacitance of the MC74HC165A?

The input capacitance is 10 pF.

What is the maximum operating temperature for the MC74HC165A?

The maximum operating temperature is 125 °C.

What is the maximum output current for the MC74HC165A?

The output current is 25 mA.

What is the output voltage high when Vin = VIHor VIL|Iout| ≤ 20 μA; 2.0?

The output voltage high is 1.9 V.

What is the output voltage low when Vin = VIH or VIL and |Iout| ≤ 20 μA at 2.0 V?

The output voltage low is 100 mV.

What is the propagation delay at 2.0 V?

The propagation delay is 190 ns at 2.0 V.

What is the quiescent current when Vin = VCC or GND, Iout = 0 μA, and VCC = 6.0 V?

The quiescent current is 160 µA.

What is the rise time under the condition of 2.0; 1000?

The rise time is 1 µs.