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SN74CBTLV16800_08

更新时间： 2024-11-01 05:17:35
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德州仪器 - TI 开关输出元件
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12页 331K
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LOW-VOLTAGE 20-BIT FET BUS SWITCH WITH PRECHARGED OUTPUTS

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SN74CBTLV16800_08 数据手册

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SN74CBTLV16800  
LOW-VOLTAGE 20-BIT FET BUS SWITCH  
WITH PRECHARGED OUTPUTS  
www.ti.com  
SCDS045J–DECEMBER 1997–REVISED MARCH 2005  
FEATURES  
DGG, DGV, OR DL PACKAGE  
(TOP VIEW)  
•
Member of the Texas Instruments Widebus™  
Family  
BIASV  
1A1  
1A2  
1A3  
1A4  
1A5  
1A6  
GND  
1A7  
1A8  
1A9  
1A10  
2A1  
2A2  
1OE  
47 2OE  
1B1  
46  
1
48  
•
•
•
5-Ω Switch Connection Between Two Ports  
2
Rail-to-Rail Switching on Data I/O Ports  
3
Ioff Supports Partial-Power-Down Mode  
Operation  
4
45 1B2  
44 1B3  
43 1B4  
5
•
B-Port Outputs Are Precharged by Bias  
Voltage to Minimize Signal Distortion During  
Live Insertion  
6
7
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
1B5  
GND  
1B6  
1B7  
1B8  
1B9  
1B10  
2B1  
2B2  
2B3  
GND  
2B4  
2B5  
2B6  
2B7  
2B8  
2B9  
2B10  
8
•
•
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
ESD Protection Exceeds JESD 22  
– 2000-V Human-Body Model (A114-A)  
– 200-V Machine Model (A115-A)  
V
CC  
DESCRIPTION/ORDERING INFORMATION  
2A3  
GND  
2A4  
2A5  
2A6  
2A7  
2A8  
2A9  
2A10  
The SN74CBTLV16800 provides 20 bits of  
high-speed bus switching. The low on-state  
resistance of the switch allows connections to be  
made with minimal propagation delay. The device  
also precharges the B port to a user-selectable bias  
voltage (BIASV) to minimize live-insertion noise.  
The device is organized as dual 10-bit bus switches  
with separate output-enable (OE) inputs. It can be  
used as two 10-bit bus switches or one 20-bit bus  
switch. When OE is low, the associated 10-bit bus  
switch is on, and port A is connected to port B. When  
OE is high, the switch is open, the high-impedance  
state exists between the two ports, and port B is  
precharged to BIASV through the equivalent of a  
10-kΩ resistor.  
<br/>  
This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging  
current will not backflow through the device when it is powered down. The device has isolation during power off.  
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
ORDERING INFORMATION  
TA  
PACKAGE(1)  
ORDERABLE PART NUMBER  
SN74CBTLV16800DL  
TOP-SIDE MARKING  
Tube  
SSOP – DL  
CBTLV16800  
Tape and reel  
Tape and reel  
Tape and reel  
SN74CBTLV16800DLR  
SN74CBTLV16800GR  
SN74CBTLV16800VR  
–40°C to 85°C  
TSSOP – DGG  
TVSOP – DGV  
CBTLV16800  
CN800  
(1) 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.  
Widebus is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 1997–2005, 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.  
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