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74LCX125YMTR

Low-voltage CMOS quad bus buffer (3-state) with 5 V tolerant inputs and outputs

STMicroelectronics 

74LCX125

Low-voltage CMOS quad bus buffer (3-state)

with 5 V tolerant inputs and outputs

Datasheet −production data

Features

■ 5 V tolerant inputs and outputs

■ High speed

– tPD = 5.2 ns (max.) at VCC = 3 V

■ Power-down protection on inputs and outputs

■ Symmetrical output impedance

– |IOH| = IOL = 24 mA (min.) at VCC = 3 V

■ PCI bus levels guaranteed at 24 mA

■ Balanced propagation delay

– tPLH ≅ tPHL

■ Operating voltage range

– VCC (opr.) = 2.0 V to 3.6 V

■ Pin and function compatible with 74 series 125

■ Latch-up performance exceeds 500 mA

(JESD 17)

■ ESD performance

– HBM: 2000 V (MIL STD 883 method 3015)

– MM: 200 V

– CDM: 1000 V

Applications

■ Automotive

■ Industrial

■ Computer

■ Consumer

TSSOP14

SO-14

Description

The 74LCX125 device is a low-voltage CMOS

quad bus buffer manufactured with sub-micron

silicon gate and double-layer metal wiring C2MOS

technology. It is ideal for low-power and high-

speed 3.3 V applications and can be interfaced to

a 5 V signal environment for both inputs and

outputs.

The device requires the 3-state control input G to

be set high to place the output in the high

impedance state.

It has the same speed performance at 3.3 V as

the 5 V AC/ACT family, combined with lower

power consumption.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2 kV ESD immunity and transient excess

voltage.

Table 1. Device summary

Order code

Temperature range

Package

Packaging

Marking

74LCX125TTR

74LCX125YTTR(1)

74LCX125MTR

74LCX125YMTR(1)

-40/+85 °C

-40/+85 °C

-40/+85 °C

-40/+85 °C

TSSOP14

TSSOP14 (automotive grade)

SO-14

SO-14 (automotive grade)

Tape and reel

Tape and reel

Tape and reel

Tape and reel

LCX125

LCX125Y

74LCX125

74LCX125Y

1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC

Q001 and Q002 or equivalent.

October 2012

This is information on a product in full production.

Doc ID 4980 Rev 8

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www.st.com

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