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SN74CBT3253C Datasheet

  • SN74CBT3253C

  • Dual 1-Of-4 FET Multiplexer/Demultiplexer with -2 V Undersho...

  • 333.75KB

  • 15页

  • TI

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SN74CBT3253C
DUAL 1 OF 4 FET MULTIPLEXER/DEMULTIPLEXER
5 V BUS SWITCH WITH 2 V UNDERSHOOT PROTECTION
SCDS123A 鈭?JULY 2003 鈭?REVISED OCTOBER 2003
D
SN74CBT3253C Functionally Identical to
D
D
D
D
D
D
D
D
D
D
D
D
Industry-Standard 鈥?253 Function
Undershoot Protection for Off-Isolation on
A and B Ports Up To 鈭? V
Bidirectional Data Flow, With Near-Zero
Propagation Delay
Low ON-State Resistance (r
on
)
Characteristics (r
on
= 3
鈩?/div>
Typical)
Low Input/Output Capacitance Minimizes
Loading and Signal Distortion
(C
io(OFF)
= 5.5 pF Typical)
Data and Control Inputs Provide
Undershoot Clamp Diodes
Low Power Consumption
(I
CC
= 3
碌A
Max)
V
CC
Operating Range From 4 V to 5.5 V
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)
Control Inputs Can Be Driven by TTL or
5-V/3.3-V CMOS Outputs
I
off
Supports Partial-Power-Down Mode
Operation
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Performance Tested Per JESD 22
鈭?2000-V Human-Body Model
(A114-B, Class II)
鈭?1000-V Charged-Device Model (C101)
Supports I
2
C Bus Expansion
Supports Both Digital and Analog
Applications: USB Interface, Bus Isolation,
Low-Distortion Signal Gating
D, DB, DBQ, OR PW PACKAGE
(TOP VIEW)
1OE
S1
1B4
1B3
1B2
1B1
1A
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
2OE
S0
2B4
2B3
2B2
2B1
2A
RGY PACKAGE
(TOP VIEW)
1OE
1
16
15
2OE
14
S0
13
2B4
12
2B3
11
2B2
10
2B1
S1
1B4
1B3
1B2
1B1
1A
2
3
4
5
6
7
8
9
D
D
description/ordering information
The SN74CBT3253C is a high-speed TTL-compatible FET multiplexer/demultiplexer with low ON-state
resistance (r
on
), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and
B ports of the SN74CBT3253C provides protection for undershoot up to 鈭? V by sensing an undershoot event
and ensuring that the switch remains in the proper OFF state.
The SN74CBT3253C is organized as two 1-of-4 multiplexer/demultiplexers with separate output-enable
(1OE, 2OE) inputs. The select (S0, S1) inputs control the data path of each multiplexer/demultiplexer. When
OE is low, the associated multiplexer/demultiplexer is enabled, and the A port is connected to the B port, allowing
bidirectional data flow between ports. When OE is high, the associated multiplexer/demultiplexer is disabled,
and a high-impedance state exists between the A and B ports.
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.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
铮?/div>
2003, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
GND
2A
V
CC
1

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