NL17SZ125 — Datasheet Summary, Specs & Alternatives

01 — Overview

This datasheet covers the NL17SZ125, a high-performance non-inverting 3-state buffer from the logic family. It is designed for operation across a wide voltage range of 1.65 V to 5.5 V and serves as a direct replacement for legacy parts like the NC7SZ125. Key performance parameters include a typical propagation delay of 2.6 ns at 5.0 V supply, balanced output drive capabilities up to 24 mA, and near-zero static supply current to reduce system power needs. The device features overvoltage-tolerant inputs and outputs compatible with both LVTTL and LVCMOS standards.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	—	1 µA	5.5; VIN = 5.5 V or GND
output voltage	0 V	—	5.5 V	V
output current	—	32 mA	—
supply voltage range	1.65 V	—	5.5 V	V
operating temperature	-55 °C	—	125 °C	°C
power dissipation	—	—	150 mW
input capacitance	—	2.5 pF	—	VCC = 5.5 V, VI = 0 V or VCC
output capacitance	—	2.5 pF	—	VCC = 5.5 V, VI = 0 V or VCC
propagation delay	2 ns	9 ns	10 ns	RL = 1 MΩ CL = 15 pF; 1.8 ± 0.15
output voltage high	—	1.55 V	—
output voltage low	—	100 mV	—

03 — Alternatives

Closest matches to NL17SZ125

NL17SZ08 1.6× higher output current, 1.4× lower propagation delay, 1.2× lower output voltage low

74LVC2G14GM 10.0× lower quiescent current, 1.7× higher power dissipation, 1.6× lower propagation delay

NC7WZ17 1.6× lower operating temperature, 1.2× lower output voltage low, 1.2× higher power dissipation

NC7WZ16 2.0× lower output voltage low, 1.6× lower propagation delay, 1.6× higher output current

74LVC245A 10.0× lower quiescent current, 4.0× higher output capacitance, 3.3× higher power dissipation

SN74AHC1G14DBVR 1.8× higher propagation delay, 1.3× higher output voltage high, 1.2× lower input capacitance

74HC595D 5.8× higher propagation delay, 3.3× higher power dissipation, 1.4× higher input capacitance

74HC14BQ 4.6× higher propagation delay, 3.3× higher power dissipation, 1.4× higher input capacitance

04 — FAQ

Frequently asked questions

What is the input capacitance of the NL17SZ125 when VCC = 5.5 V and VI = 0 V or VCC?

The input capacitance is 2.5 pF.

What is the maximum operating temperature of the NL17SZ125?

The operating temperature is 125 °C.

What is the output capacitance of the NL17SZ125 when VCC = 5.5 V and VI = 0 V or VCC?

The output capacitance is 2.5 pF.

What is the output current of the NL17SZ125?

The output current is 32 mA.

What is the maximum output voltage?

The maximum output voltage is 5.5 V at V.

What is the output voltage high?

The output voltage high is 1.55 V.

What is the maximum output voltage low?

The output voltage low is 100 mV.

What is the power dissipation of the NL17SZ125?

The power dissipation is 150 mW.