SN74CBT6800A
10-BIT FET BUS SWITCH
WITH PRECHARGED OUTPUTS
SCDS005N – MARCH 1993 – REVISED MARCH 2001
DB, DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
5-Ω Switch Connection Between Two Ports
TTL-Compatible Input Levels
Outputs Are Precharged by Bias Voltage to
Minimize Signal Distortion During Live
Insertion
ON
A1
A2
A3
A4
A5
A6
A7
A8
1
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
B1
2
3
B2
B3
B4
B5
B6
B7
B8
B9
4
description
5
6
The SN74CBT6800A provides ten bits of
high-speed TTL-compatible bus switching. The
low on-state resistance of the switch allows
bidirectional connections to be made while adding
near-zero propagation delay. The device also
precharges the B port to a user-selectable
bias voltage (BIASV) to minimize live-insertion
noise.
7
8
9
10
11
12
A9
A10
GND
B10
BIASV
The SN74CBT6800A is organized as one 10-bit switch with a single enable (ON) input. When ON is low, the
switch is on, and port A is connected to port B. When ON is high, the switch between port A and port B is open.
When ON is high or V
is 0 V, B port is precharged to BIASV through the equivalent of a 10-kΩ resistor.
CC
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
Tube
SN74CBT6800ADW
SN74CBT6800ADWR
SN74CBT6800ADBR
SN74CBT6800ADBQR
SN74CBT6800APWR
SN74CBT6800ADGVR
SOIC – DW
SSOP – DB
CBT6800A
Tape and reel
Tape and reel
CT6800A
CBT6800A
CT6800A
CT6800A
–40°C to 85°C
SSOP (QSOP) – DBQ Tape and reel
TSSOP – PW
TVSOP – DGV
Tape and reel
Tape and reel
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
FUNCTION TABLE
INPUT
FUNCTION
ON
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 2001, 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
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