74LVC245A — Datasheet Summary, Specs & Alternatives

01 — Overview

This datasheet covers the 74LVC245A and 74LVCH245A, octal bus transceivers with 3-state outputs from Nexperia. Designed for mixed voltage environments, it supports 1.2V to 3.6V supplies and interfaces directly with TTL levels. Key parameters include a wide supply range of 1.2-3.6V, overvoltage tolerant inputs up to 5.5V, Schmitt-trigger action for noise immunity, and partial power-down circuitry to prevent backflow current during shutdown. The device features bus hold on all data inputs in the LVCH variant and complies with JEDEC standards across various voltage ranges. It offers multiple package options including SO20, TSSOP20, and leadless variants, operating from -40°C to +125°C.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	100 nA	10 µA	VI = VCCor GND; IO = 0 A; VCC = 3.6 V
output voltage	0 V	—	5.5 V	output 3-state
output current	—	50 mA	—
supply voltage range	1.65 V	—	3.6 V
operating temperature	-40 °C	—	125 °C	in free air
power dissipation	—	—	500 mW	SOT163-1 (SO20); [3]
input capacitance	—	4 pF	—	VCC = 0 V to 3.6 V; VI = GND to VCC
output capacitance	—	10 pF	—	VCC = 0 V to 3.6 V; VI = GND to VCC
propagation delay	1.5 ns	6.5 ns	14.6 ns	VCC = 1.65 V to 1.95 V
output voltage high	1.2 V	—	—	IO = -4 mA; VCC = 1.65 V
output voltage low	—	—	200 mV	IO = 100 μA; VCC = 1.65 V to 3.6 V

03 — Alternatives

Closest matches to 74LVC245A

74LVC2G14GM 2.0× lower output voltage low, 2.0× lower power dissipation, 1.4× higher supply voltage range

NL17SZ125 10.0× higher quiescent current, 4.0× lower output capacitance, 3.3× lower power dissipation

NL17SZ08 10.0× higher quiescent current, 4.0× lower output capacitance, 2.5× lower output voltage low

74HC595D 8.0× higher propagation delay, 2.0× lower output voltage low, 1.9× higher supply voltage range

NC7WZ16 4.0× lower output voltage low, 2.8× lower power dissipation, 1.6× lower input capacitance

NC7WZ17 10.0× higher quiescent current, 2.8× lower power dissipation, 2.5× lower output voltage low

74HC14BQ 6.3× higher propagation delay, 2.0× lower output current, 1.9× higher supply voltage range

74HCT165BQ 8.0× higher propagation delay, 2.0× lower output current, 1.9× higher supply voltage range

04 — FAQ

Frequently asked questions

What is the input capacitance of the 74LVC245A?

The input capacitance is 4 pF when VCC = 0 V to 3.6 V and VI = GND to VCC.

What is the maximum operating temperature of the 74LVC245A in free air?

The maximum operating temperature is 125 °C in free air.

What is the output capacitance of the 74LVC245A?

The output capacitance is 10 pF when VCC = 0 V to 3.6 V and VI = GND to VCC.

What is the maximum output current for the 74LVC245A?

The maximum output current is 50 mA.

What is the output voltage when the output is 3-state?

The output voltage is 5.5 V when the output is 3-state.

What is the output voltage high when IO = -4 mA and VCC = 1.65 V?

The output voltage high is 1.2 V when IO = -4 mA and VCC = 1.65 V.

What is the maximum output voltage low when IO = 100 μA and VCC = 1.65 V to 3.6 V?

The output voltage low is 200 mV.

What is the power dissipation for the 74LVC245A in the SOT163-1 (SO20) package?

The power dissipation is 500 mW.