54ACT11640 [TI]
OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS; 八路总线收发器与3态输出
| 型号： | 54ACT11640 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| 文件： | 总5页 (文件大小：96K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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ꢋ ꢃꢄꢂꢌꢉꢍ ꢎꢏꢉ ꢄꢐꢂ ꢑꢏ ꢃꢒ ꢓ ꢔꢒ ꢐ
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SCAS027A − D2957, JULY 1987 − REVISED APRIL 1993
54ACT11640 . . . JT PACKAGE
74ACT11640 . . . DW OR NT PACKAGE
• Bidirectional Bus Transceivers in
High-Density 24-Pin Packages
(TOP VIEW)
• Inputs Are TTL-Voltage Compatible
• Flow-Through Architecture to Optimize
A1
A2
A3
DIR
B1
B2
1
24
23
22
PCB Layout
2
• Center-Pin V
and GND Configurations to
Minimize High-Speed Switching Noise
3
CC
A4
4
21 B3
20 B4
GND
GND
GND
GND
A5
A6
A7
A8
5
• EPICt (Enhanced-Performance Implanted
6
19
18
17
16
15
14
13
V
V
CMOS) 1-mm Process
CC
CC
7
• 500-mA Typical Latch-Up Immunity
at 125°C
• Package Options Include Plastic Small-
Outline Packages, Ceramic Chip Carriers,
and Standard Plastic and Ceramic 300-mil
DIPs
8
B5
B6
B7
B8
G
9
10
11
12
54ACT11640 . . . FK PACKAGE
(TOP VIEW)
description
These octal bus transceivers are designed for
asynchronous two-way communication between
data buses. These devices transmit data from the
A bus to the B bus or from the B bus to the A bus
depending upon the level at the direction control
(DIR) input. The enable input G is used to disable
the device so the buses are effectively isolated.
4
3
2 1 28 27 26
5
6
7
8
9
25
24
23
22
21
20
19
B7
B8
G
NC
A8
A7
A6
B2
B1
DIR
NC
A1
The 54ACT11640 is characterized for operation
over the full military temperature range of −55°C
to 125°C. The 74ACT11640 is characterized for
operation from − 40°C to 85°C.
10
11
A2
A3
12 13 14 15 16 17 18
NC − No internal connection
FUNCTION TABLE
CONTROL
INPUTS
OPERATION
G
DIR
L
L
H
L
H
X
B data to A bus
A data to B bus
Isolation
EPIC is a trademark of Texas Instruments Incorporated.
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Copyright 1993, Texas Instruments Incorporated
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2−1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
ꢀ ꢁꢂ ꢃ ꢄ ꢅꢅ ꢆꢁ ꢇ ꢈ ꢉ ꢊ ꢁꢂ ꢃꢄ ꢅꢅ ꢆ ꢁꢇ
ꢋꢃ ꢄꢂ ꢌꢉ ꢍ ꢎꢏ ꢉ ꢄꢐꢂ ꢑꢏ ꢃꢒ ꢓ ꢔꢒ ꢐꢏ
ꢕꢓ ꢄ ꢖ ꢉꢗ ꢘꢏ ꢄꢂꢄꢒ ꢉ ꢋ ꢎꢄ ꢙꢎꢄ ꢏ
ꢚ
SCAS027A − D2957, JULY 1987 − REVISED APRIL 1993
†
logic symbol
logic diagram (positive logic)
13
G
G
G3
24
DIR
3 EN1 [BA]
3 EN2 [AB]
DIR
A1
1
23
22
21
20
17
16
15
14
A1
A2
A3
A4
A5
A6
A7
A8
1
B1
B2
B3
B4
B5
B6
B7
B8
2
2
B1
3
To Seven Other Transceivers
4
9
10
11
12
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
Pin numbers shown are for the DW, JT, and NT packages.
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 6 V
CC
Input voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
+ 0.5 V
+ 0.5 V
I
CC
CC
Output voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
O
Input clamp current, I (V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
IK
I
I
CC
Output clamp current, I
(V < 0 or V > V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Continuous current through V
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
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.
NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2−2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
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SCAS027A − D2957, JULY 1987 − REVISED APRIL 1993
recommended operating conditions
54ACT11640
74ACT11640
UNIT
MIN
4.5
2
NOM
MAX
MIN
NOM
MAX
V
V
V
V
V
Supply voltage
5
5.5
4.5
2
5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input voltage
0.8
0.8
V
0
0
V
V
0
0
V
V
V
I
CC
CC
Output voltage
V
O
CC
CC
I
I
High-level output current
Low-level output current
Input transition rise or fall rate
Operating free-air temperature
−24
24
−24
24
mA
mA
ns/V
°C
OH
OL
Dt/Dv
0
10
0
10
T
−55
125
− 40
85
A
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
54ACT11640
74ACT11640
PARAMETER
TEST CONDITIONS
= − 50 mA
V
UNIT
CC
MIN
4.4
TYP
MAX
MIN
4.4
MAX
MIN
4.4
5.4
3.8
4.8
MAX
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
4.5 V
5.5 V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
I
I
OH
5.4
5.4
3.94
4.94
3.7
V
OH
= − 24 mA
V
OH
4.7
†
†
I
I
= − 50 mA
3.85
OH
= − 75 mA
3.85
OH
0.1
0.1
0.1
0.1
0.1
0.1
I
= 50 mA
OL
OL
0.36
0.36
0.5
0.44
0.44
V
OL
I
= 24 mA
V
0.5
†
†
I
I
= 50 mA
1.65
OL
= 75 mA
1.65
5
OL
‡
I
I
I
A or B ports
V
= V
O CC
or GND
0.5
0.1
8
10
1
mA
mA
mA
OZ
G or DIR
V = V
or GND
or GND,
1
I
I
CC
V = V
I = 0
O
160
80
CC
I
CC
One input at 3.4 V,
Other inputs at GND or V
§
5.5 V
0.9
1
1
mA
DI
CC
CC
C
C
G or DIR
V = V
CC
or GND
or GND
5 V
5 V
4
pF
pF
i
I
A or B ports
V = V
O CC
12
io
†
‡
§
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
For I/O ports, the parameter I includes the input leakage.
This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or V
OZ
.
CC
2−3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
ꢀ ꢁꢂ ꢃ ꢄ ꢅꢅ ꢆꢁ ꢇ ꢈ ꢉ ꢊ ꢁꢂ ꢃꢄ ꢅꢅ ꢆ ꢁꢇ
ꢋꢃ ꢄꢂ ꢌꢉ ꢍ ꢎꢏ ꢉ ꢄꢐꢂ ꢑꢏ ꢃꢒ ꢓ ꢔꢒ ꢐꢏ
ꢕꢓ ꢄ ꢖ ꢉꢗ ꢘꢏ ꢄꢂꢄꢒ ꢉ ꢋ ꢎꢄ ꢙꢎꢄ ꢏ
ꢚ
SCAS027A − D2957, JULY 1987 − REVISED APRIL 1993
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
T
A
= 25°C
TYP
6.3
54ACT11640
74ACT11640
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
ns
MIN
1.5
1.5
1.5
1.5
1.5
1.5
MAX
9.6
MIN
1.5
1.5
1.5
1.5
1.5
1.5
MAX
11
MIN
1.5
1.5
1.5
1.5
1.5
1.5
MAX
10.5
9.5
t
t
t
t
t
t
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
B or A
A or B
A or B
5.7
8.6
10
8.8
12.2
12.3
12.9
13.1
14.2
14.5
14.5
15
13.4
13.6
13.9
14.2
G
G
ns
8.4
9.1
ns
9.6
operating characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
= 50 pF, f = 1 MHz
L
TYP
UNIT
Outputs enabled
Outputs disabled
45
12
C
Power dissipation capacitance per transceiver
C
pF
pd
PARAMETER MEASUREMENT INFORMATION
2 × V
CC
TEST
S1
Open
2 × V
S1
t
/t
PLH PHL
/t
500 Ω
Open
GND
From Output
Under Test
t
PLZ PZL
CC
GND
t
/t
PHZ PZH
C
= 50 pF
L
500 Ω
(see Note A)
LOAD CIRCUIT
Output
Control
(low-level
enabling)
3 V
0 V
1.5 V
1.5 V
t
PZL
3 V
0 V
t
PLZ
Input
(see Note B)
Output
Waveform 1
[ V
CC
1.5 V
1.5 V
50% V
CC
20% V
S1 at 2 × V
(see Note C)
CC
CC
V
OL
t
PLH
t
PHZ
t
PHL
t
PZH
Output
Waveform 2
S1 at GND
V
OH
V
OH
80% V
CC
50% V
CC
50% V
Output
CC
50% V
CC
V
OL
[ 0 V
(see Note C)
VOLTAGE WAVEFORMS
NOTES: A. C includes probe and jig capacitance.
VOLTAGE WAVEFORMS
L
B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z = 50 Ω, t = 3 ns, t = 3 ns.
O
r
f
C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
2−4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
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