Dell SN74CB3T16212 24-Bit FET Bus Exchange Switch, 2.5- to 3.3-V Low-Voltage Bus Switch with 5-V-Tolerant Level Shifter
Summary
This datasheet provides complete specifications for the Texas Instruments SN74CB3T16212 24-bit FET bus-exchange switch with integrated 5V-tolerant level shifter, a member of the Widebus family. It details bidirectional data flow with near-zero propagation delay, mixed-mode signal operation supporting multiple voltage levels, and application guidance for PCI interfacing, USB, and memory interleaving.
Page 1 Text Content
查询74CB3T16212DGGRE4供应商 SN74CB3T16212
24-BIT FET BUS-EXCHANGE SWITCH, 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH
WITH 5-V-TOLERANT LEVEL SHIFTER
www.ti.com
SCDS157A–OCTOBER 2003–REVISED FEBRUARY
FEATURES
DGG OR DGV PACKAGE
Member of the Texas Instruments Widebus™ (TOP VIEW)
Family
Output Voltage Translation Tracks VCC S0 S1
Supports Mixed-Mode Signal Operation on All
Data I/O Ports 1A2 1B1
5-V Input Down to 3.3-V Output Level Shift
With 3.3-V VCC
5-V/3.3-V Input Down to 2.5-V Output Level
Shift With 2.5-V VCC
GND GND
5-V-Tolerant I/Os With Device Powered Up or
Powered Down
Bidirectional Data Flow, With Near-Zero 5A1 4B2
Propagation Delay 5A2 5B1
Low ON-State Resistance (ron) Characteristics 6A1 5B2
(ron Typ) 6A2 6B1
Low Input/Output Capacitance Minimizes
Loading (Cio(OFF) p F Typ)
VCC 7B2
Data and Control Inputs Provide Undershoot
Clamp Diodes
GND GND
Low Power Consumption (ICC µA Max)
VCC Operating Range From 2.3 to 3.6
Data I/Os Support 0-V to 5-V Signaling Levels 9A2 9B2
Control Inputs Can Be Driven by TTL or 10A2 10B2
5-V/3.3-V CMOS Outputs 11A1 11B1
Ioff Supports Partial-Power-Down Mode
Operation
Latch-Up Performance Exceeds m A Per
ESD Performance Tested Per JESD
2000-V Human-Body Model(A114-B, Class II)
1000-V Charged-Device Model (C101)
Supports Digital Applications: Level
Translation, PCI Interface, USB Interface,
Memory Interleaving, and Bus Isolation
Ideal for Low-Power Portable Equipment
DESCRIPTION/ORDERING INFORMATION
The SN74CB3T16212 is high-speed TTL-compatible FET bus-exchange switch, with low ON-state resistance
(ron), allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data
I/O ports by providing voltage translation that tracks VCC. The SN74CB3T16212 supports systems using 5-V TTL,
3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Figure 1).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Widebus is trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Copyright 2003–2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Page Summary Contents For Dell SN74CB3T16212 24-Bit FET Bus Exchange Switch, 2.5- to 3.3-V Low-Voltage Bus Switch with 5-V-Tolerant Level Shifter
Manual Details
| Brand | Dell |
|---|---|
| Pages | 13 |
| File Size | 233.76 KB |
| Published | July 04, 2026 |
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Frequently Asked Questions
How must the select inputs be configured to maintain a high-impedance state during power up or down?
Each select input should be tied to GND through a pull-down resistor.
What signal levels are supported by this device for mixed-mode operation?
It supports 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS standards, alongside user-defined switching levels up to 5 V.
What electrical features minimize data loss during bus data flow?
The device offers low ON-state resistance ($ ext{R}_{ ext{ON}}$), low input/output capacitance, and near-zero propagation delay.