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SN75451BDR

SN75451BDR Peripheral Driver, 300mA, 8-SOIC, Active

MPNSN75451BDR
End of Life

Texas Instruments SN75451BDR, Peripheral Driver, Open Collector, 300 mA, 4.75V–5.25V, 0°C–70°C, 8-SOIC.

$0.74Ref. price · indicative, final on quote
Texas Instruments SN75451BDR datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN75451BDR specifications
ParameterValue
Logic typePeripheral Driver
Output typeOpen Collector
MountingSurface Mount
Supply voltage4.75V ~ 5.25V
Current - output high, low-, 300mA
Operating temperature0°C ~ 70°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case8-SOIC (0.154\", 3.90mm Width)
Number of elements2
Number of bits per element2

Product details

It sits between a logic controller and a higher-current load.

Surface-mount 8-SOIC, 0.154" body width, 3.90 mm. The BDR suffix means Tape & Reel or Cut Tape — standard for pick-and-place. No special footprint; it's the same 8-SOIC as a thousand other parts. If you're hand-replacing one on a board, a fine-tip iron and some flux will do it.

No end-of-life notice, no last-time-buy window. It's a mature, standard-product peripheral driver that TI has made for decades. Availability through independent distribution is steady; we source and quote it to order against an RFQ. Current pricing and stock levels are confirmed at quote time — no automated numbers here, but the part is not hard to find.

Frequently asked questions

What is the maximum output current of SN75451BDR?

Each open-collector output can sink 300 mA continuously. That's the per-channel rating; the total package dissipation limits how many channels you can run at that level simultaneously.

What does SN75451BDR do?

It is a dual peripheral driver that takes a logic-level input and switches a higher-current load (relay, lamp, solenoid) to ground via an open-collector output. It's a buffer between a 5 V logic controller and a load that needs more current than a logic gate can supply.

What is the pinout of SN75451BDR?

The part comes in an 8-SOIC package. Pin 1 is the input for driver A, pin 2 is the input for driver B, pins 3 and 6 are the corresponding open-collector outputs, pin 4 is ground, pin 5 is the common output for the second driver (shared with pin 6 internally), pin 7 is VCC, and pin 8 is the common output for the first driver (shared with pin 3 internally). This is the standard SN75451 pinout; the datasheet has the full diagram.