logic

74HCT595

Full part number: 74HCT595BQ

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

01 — Overview

This Nexperia datasheet covers the 74HC595 and 74HCT595, an 8-bit serial-in/serial or parallel-out shift register with latches. Available in multiple packages (D, PW, BQ, BZ) across -40°C to +125°C ranges. The document defines scope for serial-to-parallel data conversion and remote control applications. Key parameters include a supply voltage of 2.0V to 6.0V, typical shift frequency of 100 MHz, and high noise immunity. It also details ESD protection exceeding 2000V HBM and provides functional diagrams showing separate clocks for shifting and latching operations.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	150 µA	675 µA	pins\overline{MR}, SHCP, STCP, \overline{OE}
output current	—	35 mA	—
supply voltage range	4.5 V	5 V	5.5 V
operating temperature	-40 °C	25 °C	125 °C
power dissipation	—	—	500 mW	SOT109-1; SOT403-1; SOT763-1
input capacitance	—	3.5 pF	—
propagation delay	—	25 ns	42 ns	SHCP to Q7S; seeFig. 6[2]
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 74HCT595

74HC164BQ 1.8× lower output current, 1.6× higher propagation delay, 1.5× lower quiescent current

74HC14BQ 5.0× lower quiescent current, 1.6× higher propagation delay, 1.4× lower output current

74HC595D 2.1× higher propagation delay, similar input capacitance, similar operating temperature

74HCT165BQ 4.3× lower quiescent current, 2.1× higher propagation delay, 1.7× higher operating temperature

74LVC245A 3.8× lower propagation delay, 1.9× lower supply voltage range, 1.7× higher operating temperature

74LVC2G14GM 4.5× lower propagation delay, 2.0× lower power dissipation, 1.7× higher operating temperature

NL17SZ125 3.3× lower power dissipation, 2.8× lower propagation delay, 1.4× lower input capacitance

NC7WZ16 4.5× lower propagation delay, 2.8× lower power dissipation, 1.7× higher operating temperature

04 — FAQ

Frequently asked questions

What is the input capacitance of the 74HCT595BQ?

The input capacitance is 3.5 pF.

What is the operating temperature specified for the 74HCT595BQ?

The operating temperature is 25 °C.

What is the output current specification for the 74HCT595BQ?

The output current is 35 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.

What is the power dissipation for the 74HCT595BQ in SOT109-1, SOT403-1, and SOT763-1 packages?

The power dissipation is 500 mW.

What is the propagation delay from SHCP to Q7S?

The propagation delay from SHCP to Q7S is 25 ns, as shown in Fig. 6.

What is the quiescent current when pins MR, SHCP, STCP, and OE are specified?

The quiescent current is 150 µA when pins MR, SHCP, STCP, and OE are specified.

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