SN74CBT162292 [TI]
12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER WITH INTERNAL PULLDOWN RESISTORS; 12位1 - OF- 2 FET复用器/解复用器具有内部下拉电阻
| 型号： | SN74CBT162292 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER WITH INTERNAL PULLDOWN RESISTORS |
| 文件： | 总5页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN74CBT162292
12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER
WITH INTERNAL PULLDOWN RESISTORS
SCDS052C – MARCH 1998 – REVISED MAY 1998
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
TTL-Compatible Control Input Levels
Isolation Under Power-Off Conditions
Make-Before-Break Feature
1
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
S
1A
NC
2A
NC
3A
NC
GND
4A
NC
5A
NC
6A
NC
7A
NC
NC
NC
Internal 500-Ω Pulldown Resistors to
Ground
2
3
1B1
1B2
2B1
2B2
3B1
GND
3B2
4B1
4B2
5B1
5B2
6B1
6B2
7B1
7B2
8B1
GND
8B2
9B1
9B2
10B1
10B2
11B1
11B2
12B1
12B2
4
A-Port Inputs/Outputs Have Equivalent
25-Ω Series Resistors, So No External
Resistors Are Required
5
6
7
Latch-Up Performance Exceeds 250 mA Per
JESD 17
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
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
description
The SN74CBT162292 is
a
12-bit 1-of-2
high-speed TTL-compatible FET multiplexer/
demultiplexer. The low on-state resistance of the
switch allows connections to be made with
minimal propagation delay.
V
CC
8A
GND
NC
9A
NC
10A
NC
11A
NC
12A
NC
When the select (S) input is low, port A is
connectedtoportB1andR
isconnectedtoport
INT
B2. When S is high, port A is connected to port B2
and R is connected to port B1.
INT
The A-port inputs/outputs include equivalent 25-Ω
series resistors to reduce overshoot and
undershoot.
The SN74CBT162292 is characterized for
operation from –40°C to 85°C.
NC – No internal connection
FUNCTION TABLE
INPUT
S
FUNCTION
A port = B1 port
L
R
= B2 port
INT
A port = B2 port
= B1 port
H
R
INT
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 1998, 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
SN74CBT162292
12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER
WITH INTERNAL PULLDOWN RESISTORS
SCDS052C – MARCH 1998 – REVISED MAY 1998
logic diagram (positive logic)
2
54
1A
1B1
R
INT
R
INT
53
30
1B2
27
12A
12B1
R
INT
R
INT
29
12B2
1
S
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
I
Continuous channel current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
IK
I
Package thermal impedance, θ (see Note 2): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81°C/W
JA
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W
DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74°C/W
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
†
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.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74CBT162292
12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER
WITH INTERNAL PULLDOWN RESISTORS
SCDS052C – MARCH 1998 – REVISED MAY 1998
recommended operating conditions (see Note 3)
MIN
4
MAX
UNIT
V
V
V
V
Supply voltage
5.5
CC
IH
IL
High-level control input voltage
Low-level control input voltage
Operating free-air temperature
2
V
0.8
85
V
T
A
–40
°C
NOTE 3: All unused control inputs of the device must be held at V
or GND to ensure proper device operation. Refer to the TI application report,
CC
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
†
PARAMETER
TEST CONDITIONS
I = –18 mA
MIN TYP
MAX
–1.2
±5
UNIT
V
V
V
V
V
V
V
= 4.5 V,
= 5.5 V,
= 0,
IK
CC
CC
CC
CC
CC
I
I
I
I
V = V or GND
I CC
µA
µA
µA
mA
pF
I
V or V = 0 to 7 V
10
off
I
O
= 5.5 V,
= 5.5 V,
I
O
= 0,
V = V
I
or GND
3
CC
CC
‡
∆I
CC
Control input
Control input
One input at 3.4 V,
Other inputs at V
or GND
2.5
CC
C
C
V = 3 V or 0
I
3.5
8
i
V
= 0,
V = 3 V or 0
O
pF
io
CC
CC
V
= 4 V,
V = 2.4 V,
I
I = 15 mA
I
38
55
TYP at V
= 4 V
CC
§
r
I = 45 mA
I
39
37
37
63
55
55
Ω
V = 0
I
V
CC
= 4.5 V
I = 30 mA
I
V = 2.4 V,
I
I = 15 mA
I
†
‡
§
All typical values are at V
= 5 V (unless otherwise noted), T = 25°C.
A
CC
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by
the lower of the voltages of the two (A or B) terminals.
or GND.
CC
switching characteristics over recommended operating free-air temperature range, C = 50 pF,
L
(unless otherwise noted) (see Figure 1)
V
= 5 V
CC
± 0.5 V
V
= 4 V
FROM
(INPUT)
TO
(OUTPUT)
CC
PARAMETER
UNIT
MIN
MAX
MIN
MAX
1.85
9.5
¶
A or B
B or A
A or B
A or B
1.9
10.7
10.9
ns
ns
ns
t
t
t
pd
en
dis
S
S
1
1
1
1
9.7
¶
Thepropagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when
driven by an ideal voltage source (zero output impedance).
switching characteristics over recommended operating free-air temperature range, C = 50 pF,
L
(unless otherwise noted) (see Figure 1)
V = 5 V
CC
± 0.5 V
V
CC
= 4 V
PARAMETER
DESCRIPTION
UNIT
MIN
MAX
MIN
MAX
#
t
Make-before-break time
0
2
0
2
ns
mbb
#
The make-before-break time is the time interval between make and break, during the transition from one selected port to the other.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74CBT162292
12-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER
WITH INTERNAL PULLDOWN RESISTORS
SCDS052C – MARCH 1998 – REVISED MAY 1998
PARAMETER MEASUREMENT INFORMATION
7 V
Open
TEST
S1
S1
500 Ω
t
pd
Open
7 V
From Output
Under Test
t
/t
GND
PZL PLZ
t
/t
Open
PZH PHZ
C
= 50 pF
L
500 Ω
(see Note A)
3 V
0 V
Output
Control
1.5 V
1.5 V
LOAD CIRCUIT
t
t
PZL
t
PLZ
Output
Waveform 1
S1 at 7 V
2.3 V
3 V
0 V
1.2 V
Input
1.5 V
1.5 V
V
OL
+ 0.3 V
V
OL
(see Note B)
t
PHZ
t
t
PHL
PZH
PLH
Output
Waveform 2
S1 at Open
(see Note B)
2.3 V
– 0.3 V
V
OH
V
OH
1.2 V
Output
1.5 V
1.5 V
0 V
V
OL
VOLTAGE WAVEFORMS
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
ENABLE AND DISABLE TIMES
NOTES: A.
C includes probe and jig capacitance.
L
B. Waveform 1 is for an output with internal conditions such that the output is low except when connected to the internal 500-Ω
pulldown resistor. Waveform 2 is for an output with internal conditions such that the output is high except when connected to the
internal 500-Ω pulldown resistor.
C. All pulse inputs and DC inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z = 50 Ω,
O
t ≤ 2.5 ns, t ≤ 2.5 ns.
D. The outputs are measured one at a time with one transition per measurement.
r
f
E.
F.
G.
t
t
t
and t
and t
and t
are the same as t . Z = R
dis
= 500 Ω.
= 500 Ω.
PLZ
PZL
PLH
PHZ
PZH
PHL
INT
INT
are the same as t . Z = R
en
are the same as t .
pd
Figure 1. Load Circuit and Voltage Waveforms
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1998, Texas Instruments Incorporated
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