BUF634

ACTIVE

250-mA high-speed buffer - see BUF634A for upgraded version

Texas Instruments BUF634 Product Info

1 April 2026 2

Parameters

Architecture	Open Loop/Buffer
Number of channels	1
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	5
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	36
GBW (typ) (MHz)	180
BW at Acl (MHz)	180
Acl, min spec gain (V/V)	1
Slew rate (typ) (V/µs)	2000
Vn at flatband (typ) (nV√Hz)	4
Vn at 1 kHz (typ) (nV√Hz)	4
Iq per channel (typ) (mA)	15
Vos (offset voltage at 25°C) (max) (mV)	100
Rail-to-rail	No
Features	Adjustable BW/IQ/IOUT
Rating	Catalog
Operating temperature range (°C)	-40 to 125
Input bias current (max) (pA)	20000000
Offset drift (typ) (µV/°C)	100
Iout (typ) (mA)	250
2nd harmonic (dBc)	75
3rd harmonic (dBc)	83
Frequency of harmonic distortion measurement (MHz)	1

Package

SOIC (D)-8-29.4 mm² 4.9 x 6

Features

A newer version of this device is now available: BUF634A
High output current: 250mA
Slew rate: 2000V/µs
Pin-selected bandwidth: 30MHz to 180MHz
Low quiescent current: 1.5mA (30MHz BW)
Wide supply range: ±2.25V to ±18V
Internal current limit
Thermal shutdown protection
Packages:
- 5-pin SOIC
- 5-pin TO-220
- 5-pin TO-263 surface-mount

A newer version of this device is now available: BUF634A
High output current: 250mA
Slew rate: 2000V/µs
Pin-selected bandwidth: 30MHz to 180MHz
Low quiescent current: 1.5mA (30MHz BW)
Wide supply range: ±2.25V to ±18V
Internal current limit
Thermal shutdown protection
Packages:
- 5-pin SOIC
- 5-pin TO-220
- 5-pin TO-263 surface-mount

Description

The BUF634 is a high-speed, unity-gain, open-loop buffer recommended for a wide range of applications. The BUF634 can be used inside the feedback loop of op amps to increase output current, eliminate thermal feedback, and improve capacitive load drive.

For low-power applications, the BUF634 operates on 1.5mA quiescent current with 250mA output, 2000V/µs slew rate, and 30MHz bandwidth. Bandwidth can be adjusted from 30MHz to 180MHz by connecting a resistor between V– and the BW pin.

Output circuitry is fully protected by internal current limit and thermal shutdown, making the device rugged and easy to use.

The BUF634 is available in a variety of packages to meet mechanical and power-dissipation requirements. Types include SOIC‑8 surface-mount, 5‑lead TO‑220, and a 5‑lead TO‑263 (DDPAK) surface-mount plastic power packages.

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ELECTRONIC COMPONENTS
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BUF634

250-mA high-speed buffer - see BUF634A for upgraded version

Texas Instruments BUF634 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

BUF634

250-mA high-speed buffer - see BUF634A for upgraded version

Texas Instruments BUF634 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor