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SCDS120A − FEBRUARY 2003 − REVISED OCTOBER 2003
D
D
Output Voltage Translation Tracks V
D
D
V
Operating Range From 2.3 V to 3.6 V
CC
CC
Supports Mixed-Mode Signal Operation On
All Data I/O Ports
− 5-V Input Down To 3.3-V Output Level
Data I/Os Support 0 to 5-V Signaling Levels
(0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V)
D
D
D
D
Control Inputs Can be Driven by TTL or
5-V/3.3-V CMOS Outputs
Shift With 3.3-V V
CC
− 5-V/3.3-V Input Down To 2.5-V Output
Level Shift With 2.5-V V
I
Supports Partial-Power-Down Mode
off
CC
Operation
D
D
D
D
D
D
5-V Tolerant I/Os With Device Powered-Up
or Powered-Down
Latch-Up Performance Exceeds 250 mA Per
JESD 17
Bidirectional Data Flow, With Near-Zero
Propagation Delay
ESD Performance Tested Per JESD 22
− 2000-V Human-Body Model
(A114-B, Class II)
Low ON-State Resistance (r
)
on
Characteristics (r = 5 Ω Typical)
on
− 1000-V Charged-Device Model (C101)
Low Input/Output Capacitance Minimizes
D
D
Supports Digital Applications: Level
Translation, USB Interface, Bus Isolation
Loading (C
= 4.5 pF Typical)
io(OFF)
Data and Control Inputs Provide
Undershoot Clamp Diodes
Ideal for Low-Power Portable Equipment
Low Power Consumption
(I
= 20 µA Max)
CC
DGV OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
1OE
1A
1B
2OE
2A
2B
V
CC
4OE
4A
4B
3OE
3A
3B
8
GND
description/ordering information
The SN74CB3T3125 is a high-speed TTL-compatible FET bus switch with low ON-state resistance (r ),
on
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 V . The SN74CB3T3125 supports systems using 5-V TTL,
CC
3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Figure 1).
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
T
A
PACKAGE
Tube
SN74CB3T3125PW
TSSOP − PW
TVSOP − DGV
KS125
KS125
Tape and reel SN74CB3T3125PWR
Tape and reel SN74CB3T3125DGVR
−40°C to 85°C
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
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.
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Copyright 2003, Texas Instruments Incorporated
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1
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