SN74CBT3126DR

$0.60

Description：IC BUS SWITCH 1 X 1:1 14SOIC
Series：74CBT
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT),Bulk

SKU:2fc2182bbd63 Category: Signal Switches, Multiplexers, Decoders Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC BUS SWITCH 1 X 1:1 14SOIC
Series：74CBT
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT),Bulk
Type：Bus Switch
Circuit：1 x 1:1
Independent Circuits：4
Current - Output High, Low：-
Voltage Supply Source：Single Supply
Voltage - Supply：4.5V ~ 5.5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：14-SOIC (0.154", 3.90mm Width)
Supplier Device Package：14-SOIC
Grade：-
Qualification：-

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SN74CBT3126DR

Overview

The SN74CBT3126DR is a low-voltage quadruple FET bus switch manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V and features four independent channels with a 1 x 1:1 configuration. The device provides powered-off protection, ensuring that high-impedance states are maintained when power is removed. It supports standard SPI and JTAG signals and offers an on-resistance of 5 Ohms typical value. The component is housed in an 8-pin SOIC package and functions reliably across an operating temperature range from -40 °C to +85 °C.

Feature Summary

Provides powered-off protection for safe operation during power loss events
Supports standard SPI and JTAG signal protocols
Features low on-resistance for efficient signal transmission

Applications

SPI interface signal switching
JTAG boundary scan circuitry
Low-voltage data bus isolation

Procurement Notes

Verify the specific package suffix 'D' corresponds to the SOIC-8 variant required for your PCB layout. Confirm the voltage rating aligns with your system's 2.3V to 3.6V operational limits. Ensure thermal management meets the -40°C to +85°C industrial grade specifications. Cross-reference the manufacturer part number against current datasheets to confirm pinout compatibility before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring isolated bidirectional switching for low-voltage logic families. It is suitable for applications needing robust powered-off protection to prevent back-powering. Consider its low on-resistance for maintaining signal integrity in high-speed digital buses like SPI or JTAG. Verify that the 8-pin SOIC footprint fits your assembly constraints.

Part Context

This device belongs to the SN74CBTLV series of low-voltage bus switches. It is designed for portable and battery-powered applications where power conservation and signal isolation are critical. The quadruple configuration allows for managing multiple data lines simultaneously within a compact form factor.