SN74LVC125A Quadruple Bus Buffer Gate With 3-State Outputs

1 Features

• 3-State outputs

• Separate OE for all 4 buffers

• Operates from 1.65V to 3.6V

• Specified from –40°C to 85°C

and –40°C to 125°C

• Inputs accept voltages to 5.5V

• Max tpd of 4.8ns at 3.3V

• Typical VOLP (output ground bounce)

< 0.8V at VCC = 3.3V, TA = 25°C

• Typical VOHV (output VOH undershoot)

> 2V at VCC = 3.3V, TA = 25°C

• Latch-up performance exceeds 250mA

per JESD 17

2 Applications

• Cable Modem Termination Systems

• IP Phones: Wired and Wireless

• Optical Modules

• Optical Networking:

– EPON or Video Over Fiber

• Point-to-Point Microwave Backhaul

• Power: Telecom DC/DC Modules:

– Analog or Digital

• Private Branch Exchanges (PBX)

• TETRA Base Stations

• Telecom Base Band Units

• Telecom Shelters:

– Filter Units

– Power Distribution Units (PDU)

– Power Monitoring Units (PMU)

– Wireless Battery Monitoring

– Remote Electrical Tilt Units (RET)

– Remote Radio Units (RRU)

– Tower Mounted Amplifiers (TMA)

• Vector Signal Analyzers and Generators

• Video Conferencing: IP-Based HD

• WiMAX and Wireless Infrastructure Equipment

• Wireless Communications Testers

• xDSL Modems and DSLAM

3 Description

This quadruple bus buffer gate is designed for 1.65V

to 3.6V VCC operation.

The SN74LVC125A device features independent line

drivers with 3-state outputs. Each output is disabled

when the associated output-enable (OE) input is high.

To ensure the high-impedance state during power up

or power down, OE should be tied to VCC through

a pullup resistor; the minimum value of the resistor

is determined by the current-sinking capability of the

driver.

Inputs can be driven from either 3.3V or 5V devices.

This feature allows the use of this device as a

translator in a mixed 3.3V/5V system environment.

Package Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

BODY SIZE(3)

SN74LVC125A

BQA (WQFN, 14)

3mm × 2.5mm

3mm × 2.5mm

D (SOIC, 14)

8.6 mm × 6mm

8.65mm × 3.91mm

DB (SSOP, 14)

6.20mm × 7.8mm

6.20mm × 5.30mm

NS (SOP, 14)

10.2mm × 7.8mm

10.30mm × 5.30mm

PW (TSSOP, 14)

5.00mm × 6.4mm

5.00mm × 4.40mm

RGY (VQFN, 14)

3.50mm × 3.50mm

3.50mm × 3.50mm

(1)

For more information, see Section 11.

(2)

The package size (length x width) is a nominal value and

includes pins, where applicable.

(3)

The body size (length × width) is a nominal value and does

not include pins.

2A

2Y

2OE

1A

1Y

1OE

4A

4Y

4OE

3A

3Y

3OE

Simplified Schematic

SN74LVC125A

SCAS290R – JANUARY 2015 – REVISED FEBRUARY 2024

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.