Texas Instruments SN74CB3Q3251 Data Sheet Manual

查询SN74CB3Q3251供应商 SN74CB3Q3251

1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER

2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH

www.ti.com

SCDS173A–AUGUST 2004–REVISED MARCH

FEATURES Data and Control Inputs Provide Undershoot

(1)) Clamp Diodes•

High-Bandwidth Data Path (up to MHz

Low Power Consumption (ICC m A Typ)•

Equivalent to IDTQS3VH251 Device

VCC Operating Range From 2.3 to 3.6 V•

5-V Tolerant I/Os With Device Powered Up or

Powered Down Data I/Os Support 0- to 5-V Signaling Levels

Low and Flat ON-State Resistance (ron)

Characteristics Over Operating Range Control Inputs Can Be Driven by TTL or

(ron Typ) 5-V/3.3-V CMOS Outputs

Rail-to-Rail Switching on Data I/O Ports Ioff Supports Partial-Power-Down Mode

Operation–

0- to 5-V Switching With 3.3-V VCC

Latch-Up Performance Exceeds m A Per–

0- to 3.3-V Switching With 2.5-V VCC

JESD 78, Class II•

Bidirectional Data Flow With Near-Zero

ESD Performance Tested Per JESD 22Propagation

Delay

2000-V Human-Body Model (A114-B,•

Low Input/Output Capacitance Minimizes

Class II)Loading

and Signal Distortion

(Cio(OFF) 3.5 p F Typ) 1000-V Charged-Device Model (C101)

Fast Switching Frequency Supports Both Digital and Analog

(f OE or f S MHz Max) Applications: PCI Interface, Differential Signal

For additional information regarding the performance Interface, Memory Interleaving, Bus Isolation,(1)

characteristics of the CB3Q family, refer to the TI application

Low-Distortion Signal Gating

report, CBT-C, CB3T, and CB3Q Signal-Switch Families,

literature number SCDA008.

DBQ, DGV, OR PW PACKAGE RGY PACKAGE

(TOP VIEW) (TOP VIEW)

B4 VCC B3 B5 B2 B6

NC S0

OE S1

NC S0

GND S2

OE S1

NC - No internal connection

NC - No internal connection

DESCRIPTION/ORDERING INFORMATION

The SN74CB3Q3251 is high-bandwidth FET bus switch utilizing charge pump to elevate the gate voltage of

the pass transistor, providing low and flat ON-state resistance (ron). The low and flat ON-state resistance allows

for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device

also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus.

Specifically designed to support high-bandwidth applications, the SN74CB3Q3251 provides an optimized

interface solution ideally suited for broadband communications, networking, and data-intensive computing

systems.

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.

PRODUCTION DATA information is current as of publication date. Copyright 2004–2005, 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.