SN74CBT3384_1 [TI]
10-BIT CROSSBAR SWITCH; 10位交叉开关
| 型号： | SN74CBT3384_1 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 10-BIT CROSSBAR SWITCH |
| 文件： | 总5页 (文件大小：60K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN74CBT3384
10-BIT CROSSBAR SWITCH
SCDS004B – NOVEMBER 1992 – REVISED JUNE 1994
DB, DW, OR PW PACKAGE
(TOP VIEW)
• Functionally Equivalent to QS3384 and
QS3L384
• 5-Ω Switch Connection Between Two Ports
• TTL-Compatible Input and Output Levels
• Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
OE1
B1
A1
A2
B2
B3
A3
A4
B4
V
CC
1
24
23
22
21
20
19
18
17
16
B10
A10
A9
B9
B8
A8
A7
B7
2
3
4
5
6
7
description
8
9
The SN74CBT3384 provides ten bits of
high-speed TTL-compatible bus switching. The
low on resistance of the switch allows connections
to be made without adding propagation delay.
B5
A5
GND
10
11
12
15 B6
A6
OE2
14
13
The device is organized as two 5-bit switches with separate output-enable (OE) inputs. When OE is low, the
switch is on and port A is connected to port B. When OE is high, the switch is open and a high-impedance state
exists between the two ports.
The SN74CBT3384 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
OE1
L
OE2
L
B1– B5
A1 –A5
A1 –A5
Z
B6–B10
A6–A10
Z
L
H
H
L
A6–A10
Z
H
H
Z
Copyright 1994, 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.
11–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74CBT3384
10-BIT CROSSBAR SWITCH
SCDS004B – NOVEMBER 1992 – REVISED JUNE 1994
logic diagram
A1
A5
B1
B5
OE1
A6
B6
A10
B10
OE2
†
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 6 V
I
Continuous channel current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Input clamp current, I (V < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
IK I/O
Maximum power dissipation at T = 55°C (in still air) (see Note 2): DB package . . . . . . . . . . . . . . . . . . 0.6 W
A
DW package . . . . . . . . . . . . . . . . . 1.6 W
PW package . . . . . . . . . . . . . . . . . . 0.7 W
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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 maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils.
For more information, refer to the Package Thermal Considerations application note.
recommended operating conditions
MIN
4.75
2
MAX
UNIT
V
V
V
V
Supply voltage
5.25
CC
IH
IL
High-level control input voltage
Low-level control input voltage
Operating free-air temperature
V
0.8
70
V
T
A
0
°C
11–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74CBT3384
10-BIT CROSSBAR SWITCH
SCDS004B – NOVEMBER 1992 – REVISED JUNE 1994
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,
= 5.25 V,
= 4.75 V,
= 5.5 V,
= 5.25 V,
IK
CC
CC
CC
CC
CC
I
I
I
I
V = 5.25 V or GND
I
µA
mA
µA
mA
pF
I
V
= 0,
V
= 4.75 V
250
OS
CC
I(A)
= 0,
I(B)
V = V
I
or GND
50
O
I
CC
‡
∆I
CC
Control pins
Control pins
One input at 3.4 V,
Other inputs at V
or GND
2.5
CC
C
C
V = 3 V or 0
I
3
6
i
V
O
= 3 V or 0,
OE = V
CC
pF
io(OFF)
V = 0,
I
I = 64 mA
I
5
7
7
§
r
on
V
CC
= 4.75 V
V = 0,
I
I = 30 mA
I
5
Ω
V = 2.4 V,
I
I = 15 mA
I
10
15
†
‡
§
All typical values are at V
= 5 V, 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
or GND.
CC
Measured by the voltage drop between the A and B pin at the indicated current through the switch. On resistance is determined by the lower of
the voltages of the two (A or B) pins.
switching characteristics over recommended operating free-air temperature range, C = 50 pF
L
(unless otherwise noted) (see Note 3)
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
¶
t
t
t
A or B
OE
B or A
A or B
A or B
0.25
8.5
ns
ns
ns
pd
en
1
1
8.5
OE
dis
¶
This parameter is characterized but not tested. This propagation delay is based on the RC time constant of the typical on resistance of the switch
and a load capacitance of 50 pF.
NOTE 3: Load circuit and voltage waveforms are shown in Section 1.
11–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
11–4
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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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.
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DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
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party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1999, Texas Instruments Incorporated
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