logic

MC74HC165A

Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the MC74HC165A does

The MC74HC165A is an 8-bit shift register with complementary outputs from the final stage, available in parallel or serial input configurations. It operates on a single supply of 2.0 to 6.0 V and supports input voltages up to VCC + 0.5 V. The device features a 2-input NOR clock allowing independent sources or clock inhibit functionality, with a maximum supply current of 50 mA. It drives 10 LSTTL loads and interfaces directly with CMOS, NMOS, and TTL logic. This component is suitable for data loading and shifting applications across commercial, industrial, and automotive temperature ranges from -55 to +125 °C.

Next step
Start building with MC74HC165A → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
01 — Key specifications

Datasheet parameters

Datasheet parameters for MC74HC165A
ParameterMinTypMaxConditionsSource
quiescent current 4 µA 160 µA Vin = VCCor GNDIout = 0 μA; VCCV = 6.0; icc(per package); DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) onsemi datasheet, p. 4 — DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
output current (abs max) -25 mA 25 mA iout; MAXIMUM RATINGS onsemi datasheet, p. 3 — MAXIMUM RATINGS
supply voltage range 2 V 6 V vcc(referenced to gnd); RECOMMENDED OPERATING CONDITIONS onsemi datasheet, p. 3 — RECOMMENDED OPERATING CONDITIONS
operating temperature -55 °C 125 °C ta; RECOMMENDED OPERATING CONDITIONS onsemi datasheet, p. 3 — RECOMMENDED OPERATING CONDITIONS
input capacitance 10 pF 10 pF –; ≤_85°C = 10; cin onsemi datasheet, p. 4
propagation delay 150 ns 225 ns VCCV = 2.0; ≤_85°C = 190; tplh(figures 1 and 8) onsemi datasheet, p. 4
rise time 1 µs VCCV = 2.0; ≤_125°C = 1000; tr(figure 1); MC74HC165A onsemi datasheet, p. 5 — MC74HC165A
output voltage high 1.9 V 1.9 V Vin = VIHor VIL|Iout| ≤ 20 μA; voh; DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) onsemi datasheet, p. 3 — DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
output voltage low 100 mV 100 mV Vin = VIHor VIL|Iout| ≤ 20 μA; VCCV = 2.0; vol; DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) onsemi datasheet, p. 4 — DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
02 — Alternatives

Closest matches to MC74HC165A

SN54HC595 2.0× higher quiescent current, 1.3× higher propagation delay, 1.2× higher supply voltage range
SN54HC14 3.4× lower propagation delay, 1.2× higher supply voltage range, similar input capacitance
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
NC7WZ16 4.0× lower input capacitance, 1.2× higher operating temperature, 1.2× lower output voltage high
NL17SZ08 4.0× lower input capacitance, 1.4× lower output voltage high, 1.2× lower output voltage low
SN74AHC1G14DBVR 5.0× lower input capacitance, 1.2× higher operating temperature, 1.1× lower supply voltage range
SN74LVC1G04 8.2× lower quiescent current, 1.6× lower output voltage high, 1.2× higher operating temperature
03 — FAQ

Frequently asked questions

What is the input capacitance of the MC74HC165A?

The input capacitance is 10 pF at –; ≤_85°C = 10; cin.

What is the maximum operating temperature (ta) for the MC74HC165A under recommended operating conditions?

The maximum operating temperature (ta) is 125 °C.

What is the maximum output current (iout) specified in the Maximum Ratings section?

The maximum output current (iout) is 25 mA.

What is the output voltage high (Voh) when Vin = VIH or VIL, |Iout| ≤ 20 μA?

The output voltage high is 1.9 V.

What is the output voltage low (vol) when Vin = VIH or VIL, |Iout| ≤ 20 μA, and VCCV = 2.0 V?

The output voltage low is 100 mV.

What is the propagation delay (tplh) for the MC74HC165A at VCC = 2.0V and temperatures up to 85°C?

The propagation delay (tplh) is 225 ns at VCC = 2.0V and temperatures up to 85°C, as shown in figures 1 and 8.

What is the quiescent current when Vin = VCCor GNDIout = 0 μA and VCCV = 6.0?

The quiescent current is 160 µA.

What is the rise time for the MC74HC165A at VCCV = 2.0 and ≤_125°C = 1000 as shown in figure 1?

The rise time is 1 µs.

What is the supply voltage range under RECOMMENDED OPERATING CONDITIONS?

The supply voltage range is 6 V when vcc is referenced to gnd.

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