Texas Instruments SN74CBT16232DGGR, SN74CBT16232DL, SN74CBT16232DLR Datasheet
SN74CBT16232
SYNCHRONOUS 16-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER
SCDS009J – MAY 1995 – REVISED MAY 1999
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
5-Ω Switch Connection Between Two Ports
D
TTL-Compatible Input and Output Levels
D
Package Options Include Plastic Thin
Shrink Small-Outline (DGG) and 300-mil
Shrink Small-Outline (DL) Packages
description
The SN74CBT16232 is a synchronous 16-bit
1-of-2 FET multiplexer/demultiplexer used in
applications in which two separate data paths
must be multiplexed onto, or demultiplexed from,
a single path.
Two select (S0 and S1) inputs control the data
flow. A clock (CLK) and a clock enable (CLKEN
)
synchronize the device operation. When CLKEN
is high, the bus switch remains in the last clocked
function.
The SN74CBT16232 is characterized for
operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
S1 S0 CLK CLKEN
FUNCTION
X X X H Last state
L L ↑ L Disconnect
L H ↑ L A = B1 and A = B2
H L ↑ L A = B1
H H ↑ L A = B2
1B1
1B2
2A
3B1
3B2
4A
5B1
5B2
6A
7B1
7B2
8A
GND
V
CC
9B1
9B2
10A
1 1B1
1 1B2
12A
13B1
13B2
14A
15B1
15B2
16A
S0
S1
DGG OR DL PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1A
2B1
2B2
3A
4B1
4B2
5A
6B1
6B2
7A
8B1
8B2
GND
V
CC
9A
10B1
10B2
11A
12B1
12B2
13A
14B1
14B2
15A
16B1
16B2
CLK
CLKEN
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.
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, T exas Instruments Incorporated
SN74CBT16232
SYNCHRONOUS 16-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER
SCDS009J – MAY 1995 – REVISED MAY 1999
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
1A
S0
S1
CE
CLK
D
CLK
CLKEN
CE
CLK
D
56
55
25
26
1
31
28
27
30
29
16A
1B1
1B2
16B1
16B2
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous channel current 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): DGG package 81°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DL package 74°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions (see Note 3)
MIN MAX UNIT
V
CC
Supply voltage 4 5.5 V
V
IH
High-level control input voltage 2 V
V
IL
Low-level control input voltage 0.8 V
T
A
Operating free-air temperature –40 85 °C
NOTE 3: All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
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