SN74CBT16245
16-BIT FET BUS SWITCH
SCDS070C – JULY 1998 – REVISED OCTOBER 2000
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Member of Texas Instruments’ Widebus
Family
Standard ’16245-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
NC
1B1
1B2
GND
1B3
1B4
1OE
1A1
1A2
GND
1A3
1A4
5-Ω Switch Connection Between Two Ports
TTL-Compatible Input Levels
2
3
4
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
5
6
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
7
V
V
CC
CC
8
1B5
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
9
– 1000-V Charged-Device Model (C101)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
description
The SN74CBT16245 device provides 16 bits of
high-speed TTL-compatible bus switching in a
standard ’16245 device pinout. The low on-state
resistance of the switch allows connections to be
made with minimal propagation delay.
V
V
The device is organized as two 8-bit low-impedance
switches with separate output-enable (OE) inputs.
When OE is low, the switch is on, and data can
flow from the A port to the B port, or vice versa.
When OE is high, the switch is open, and the
high-impedance state exists between the two
ports.
CC
CC
2B5
2B6
GND
2B7
2B8
NC
2A5
2A6
GND
2A7
2A8
2OE
NC – No internal connection
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
T
A
PACKAGE
Tube
SN74CBT16245DL
SSOP – DL
CBT16245
Tape and reel SN74CBT16245DLR
Tape and reel SN74CBT16245DGGR
Tape and reel SN74CBT16245DGVR
–40°C to 85°C
TSSOP – DGG
TVSOP – DGV
CBT16245
CY245
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
(each 8-bit bus switch)
INPUT
FUNCTION
OE
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
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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