SN74CB3Q3253PW

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SN74CB3Q3253PW

IC MUX/DEMUX 2 X 4:1 16TSSOP

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Spécifications

Supplier Rochester Electronics, LLC,Texas Instruments
Package Bulk,Tube
Series 74CB
ProductStatus Active
Type Multiplexer/Demultiplexer
Circuit 2 x 4:1
IndependentCircuits 1
VoltageSupplySource Single Supply
Voltage-Supply 2.3V ~ 3.6V
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 16-TSSOP (0.173, 4.40mm Width)

Vue d'ensemble

Description

The SN74CB3Q3253PW is an 8-bit bidirectional bus transceiver/level shifter from TI’s CB3Q family. It provides two 8-bit I/O banks (A and B) with tri-state outputs, controlled by a direction input (DIR) and an output-enable input (OE). When enabled, data can pass between the A and B sides in either direction depending on DIR, enabling bidirectional data transfer and voltage-domain bridging between two supplies (VCCA on side A and VCCB on side B). It’s designed for mixed-voltage interfaces and for sharing buses between devices with different logic levels. Typical uses include microcontroller-to-peripheral interfaces, memory/bus bridging, and other applications requiring reversible data transfer across voltage domains. The PW suffix indicates a specific package (commonly a 20-pin small-outline/TSSOP-style package) suitable for compact board designs.

Features

Here are the typical features of TI SN74CB3Q3253PW:
- Three bidirectional, three-channel pass-gate bus switches (A↔B) with a common direction control
- Single overall output-enable (OE): when OE is low, data passes; when OE is high, all channels are high-impedance
- Direction control via DIR input determines which direction data flows
- CMOS, low on-resistance pass gates for high-speed operation
- Wide operating voltage range (VCC) suitable for TTL/CMOS logic and potential level shifting between buses
- ESD protection on all I/O pins
- Package: PW (16-pin small-outline) for compact designs
- Applications: bus expansion/interconnects, data buffering, backplanes, and level-shift interconnections
Note: Always verify exact electrical specs (Vcc range, RON, data rate) from the TI datasheet for your specific operating conditions.

Package

PW denotes TI’s Plastic Small Outline Package (SOP) – a surface-mount, gull-wing package.

Pinout

- Pin count: 20 pins (PW package)
- Function: Dual 3-state buffer/drive (bus switch) device used to pass or isolate two data buses with tri-state outputs (enable-controlled).

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures integrated circuits, specializing in analog, mixed-signal, and digital ICs and embedded processing devices.

Application

- Bidirectional tri-state bus switching between two buses
- Voltage-domain level shifting (different Vccs)
- Data/address bus routing and multiplexing in microprocessor/memory systems
- I/O expansion and backplane/interconnect interfaces
- Test, debug, and hot-swap signal routing in complex boards
Note: Refer to the datasheet for exact voltage ranges and operation.

Equivalent

Pin-compatible equivalents are typically NXP’s 74CB3Q3253. Other manufacturers may offer functionally similar CB-series bus switches; for exact package and speed, check a distributor cross-reference (Digi‑Key, Mouser, etc.).

Expédition

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