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SN74CBTLV16800DGGR PDF预览

SN74CBTLV16800DGGR

更新时间: 2024-11-01 13:13:47
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SN74CBTLV16800DGGR 数据手册

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SN74CBTLV16800  
LOW-VOLTAGE 20-BIT FET BUS SWITCH  
WITH PRECHARGED OUTPUTS  
SCDS045F – DECEMBER 1997 – REVISED MAY 1999  
DGG, DGV, OR DL PACKAGE  
(TOP VIEW)  
5-Switch Connection Between Two Ports  
Isolation Under Power-Off Conditions  
B-Port Outputs Are Precharged by Bias  
Voltage to Minimize Signal Distortion  
During Live Insertion  
BIASV  
1A1  
1A2  
1A3  
1A4  
1A5  
1A6  
GND  
1A7  
1A8  
1A9  
1A10  
2A1  
1OE  
2OE  
1B1  
1B2  
1B3  
1B4  
1B5  
GND  
1B6  
1B7  
1B8  
1B9  
1B10  
1
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
2
3
4
ESD Protection Exceeds 2000 V Per  
MIL-STD-883, Method 3015; Exceeds 200 V  
Using Machine Model (C = 200 pF, R = 0)  
5
6
7
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
8
9
Package Options Include Plastic Thin  
Shrink Small-Outline (DGG), Thin Very  
Small-Outline (DGV), and 300-mil Shrink  
Small-Outline (DL) Packages  
10  
11  
12  
13  
NOTE: For tape and reel order entry:  
35 2B1  
34 2B2  
33 2B3  
2A2 14  
15  
2A3 16  
The DGGR package is abbreviated to GR, and  
the DGVR package is abbreviated to VR.  
V
CC  
17  
18  
19  
20  
21  
22  
23  
24  
32  
31  
30  
29  
28  
27  
26  
25  
GND  
2A4  
2A5  
2A6  
2A7  
2A8  
2A9  
2A10  
GND  
2B4  
2B5  
2B6  
2B7  
2B8  
2B9  
2B10  
description  
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 OEis 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-kresistor.  
To ensure the high-impedance state during power up or power down, OE should be tied to V through a pullup  
CC  
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.  
The SN74CBTLV16800 is characterized for operation from –40°C to 85°C.  
FUNCTION TABLE  
(each 10-bit bus switch)  
INPUT  
FUNCTION  
OE  
L
A port = B port  
A port = Z  
B port = BIASV  
H
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.  
Copyright 1999, Texas Instruments Incorporated  
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.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

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