SN54CBT16244, SN74CBT16244
16-BIT FET BUS SWITCHES
SCDS031I – MAY 1996 – REVISED OCTOBER 2000
SN54CBT16244 . . . WD PACKAGE
SN74CBT16244 . . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Members of Texas Instruments’ Widebus
Family
Standard ’16244-Type Pinout
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1B1
1B2
GND
1B3
1B4
2OE
1A1
1A2
GND
1A3
1A4
5-Ω Switch Connection Between Two Ports
TTL-Compatible Input Levels
2
3
4
description
5
The ’CBT16244 devices provide 16 bits of
high-speed TTL-compatible bus switching in a
standard ’16244 device pinout. The low on-state
resistance of the switch allows connections to be
made with minimal propagation delay.
6
7
V
V
CC
CC
8
2B1
2B2
GND
2B3
2B4
3B1
3B2
GND
3B3
3B4
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
These devices are organized as four 4-bit
low-impedance
switches
with
separate
output-enable (OE) inputs. When OE is low, the
switch is on, and data can flow from port A to port
B, or vice versa. When OE is high, the switch is
open, and the high-impedance state exists
between the two ports.
V
V
CC
CC
4B1
4B2
GND
4B3
4B4
4A1
4A2
GND
4A3
4A4
3OE
4OE
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
T
A
PACKAGE
Tube
SN74CBT16244DL
SSOP – DL
CBT16244
Tape and reel SN74CBT16244DLR
Tape and reel SN74CBT16244DGGR
Tape and reel SN74CBT16244DGVR
–40°C to 85°C
–55°C to 125°C
TSSOP – DGG
TVSOP – DGV
CFP – WD
CBT16244
CY244
Tube
SNJ54CBT16244WD
SNJ54CBT16244WD
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
(each 4-bit bus switch)
INPUT
OE
OUTPUTS
A, B
L
A port = B port
Disconnect
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.
Widebus is a trademark of Texas Instruments.
Copyright 2000, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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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