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SN74CBT3253C

更新时间： 2024-11-09 05:24:51
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德州仪器 - TI 复用器开关
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14页 398K
描述
DUAL 1-OF-4 FET MULTIPLEXER / DEMULTIPLEXER 5-V BUS SWITCH WITH-2-V UNDERRSHOOT PROTECTION

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SN74CBT3253C 数据手册

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SCDS123A − JULY 2003 − REVISED OCTOBER 2003  
D, DB, DBQ, OR PW PACKAGE  
(TOP VIEW)  
D
D
D
D
D
SN74CBT3253C Functionally Identical to  
Industry-Standard ’3253 Function  
Undershoot Protection for Off-Isolation on  
A and B Ports Up To −2 V  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
V
2OE  
S0  
2B4  
2B3  
2B2  
2B1  
2A  
1OE  
S1  
CC  
Bidirectional Data Flow, With Near-Zero  
Propagation Delay  
1B4  
1B3  
1B2  
1B1  
1A  
Low ON-State Resistance (r  
)
on  
Characteristics (r = 3 Ω Typical)  
on  
Low Input/Output Capacitance Minimizes  
Loading and Signal Distortion  
GND  
(C  
= 5.5 pF Typical)  
io(OFF)  
D
D
Data and Control Inputs Provide  
Undershoot Clamp Diodes  
RGY PACKAGE  
(TOP VIEW)  
Low Power Consumption  
(I  
= 3 µA Max)  
CC  
D
V
Operating Range From 4 V to 5.5 V  
CC  
1
16  
D
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)  
15  
14  
13  
12  
11  
10  
S1  
1B4  
1B3  
1B2  
1B1  
1A  
2
3
4
5
6
7
2OE  
S0  
2B4  
2B3  
2B2  
2B1  
D
D
D
D
Control Inputs Can Be Driven by TTL or  
5-V/3.3-V CMOS Outputs  
I
Supports Partial-Power-Down Mode  
off  
Operation  
8
9
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
ESD Performance Tested Per JESD 22  
− 2000-V Human-Body Model  
(A114-B, Class II)  
− 1000-V Charged-Device Model (C101)  
2
D
D
Supports I C Bus Expansion  
Supports Both Digital and Analog  
Applications: USB Interface, Bus Isolation,  
Low-Distortion Signal Gating  
description/ordering information  
The SN74CBT3253C is a high-speed TTL-compatible FET multiplexer/demultiplexer with low ON-state  
resistance (r ), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and  
on  
B ports of the SN74CBT3253C provides protection for undershoot up to −2 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.  
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Copyright 2003, Texas Instruments Incorporated  
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...14

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 		DUAL 1-OF-4 FET MULTIPLEXER / DEMULTIPLEXER 5-V BUS SWITCH WITH-2-V UNDERRSHOOT PROTECTION
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