74AC11643DBLE [TI]
Octal Bus Transceivers With 3-State Outputs 24-SSOP -40 to 85;
| 型号： | 74AC11643DBLE |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Octal Bus Transceivers With 3-State Outputs 24-SSOP -40 to 85 总线收发器 输出元件 |
| 文件： | 总5页 (文件大小：98K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ꢀ ꢁꢂ ꢃ ꢄꢄꢅ ꢁꢆ
ꢇ ꢃꢈꢂꢉꢊꢋ ꢌꢍꢊ ꢈꢎꢂ ꢏꢍ ꢃ ꢐꢑ ꢒ ꢐꢎ
ꢓ ꢑꢈ ꢔꢊ ꢆ ꢕꢍꢈꢂꢈ ꢐꢊ ꢇꢌ ꢈꢖ ꢌꢈ ꢍ
SCAS057A − JULY 1987 − REVISED APRIL 1993
DW OR NT PACKAGE
(TOP VIEW)
• Bidirectional Bus Transceivers in
High-Density 24-Pin Packages
• Flow-Through Architecture Optimizes PCB
A1
A2
A3
DIR
1
2
3
4
5
6
7
8
9
24
Layout
23 B1
22 B2
21 B3
20 B4
• Center-Pin V
and GND Configurations
Minimize High-Speed Switching Noise
CC
A4
GND
GND
GND
GND
A5
•
EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
19
18
V
V
CC
CC
• 500-mA Typical Latch-Up Immunity at
17 B5
16 B6
15 B7
14 B8
13 OE
125°C
• Package Options Include Plastic
Small-Outline Packages and Standard
Plastic 300-mil DIPs
A6 10
A7 11
A8 12
description
These octal bus transceivers are designed for asynchronous 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 output-enable (OE) input can be used to disable the device so that the
buses are effectively isolated.
The 74AC11643 is characterized for operation from −40°C to 85°C.
FUNCTION TABLE
INPUTS
OPERATION
OE
L
DIR
L
B data to A bus
A data to B bus
Isolation
L
H
H
X
†
logic symbol
logic diagram (positive logic)
13
13
OE
OE
G3
24
DIR
3 EN1 [BA]
3 EN2 [AB]
24
DIR
1
23
A1
B1
1
1
1
2
22
21
20
2
B2
B3
B4
A2
1
23
3
A1
B1
A3
4
A4
9
17
16
15
A5
B5
B6
B7
10
A6
11
A7
14
12
B8
A8
To 7 Other Channels
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
EPIC is a trademark of Texas Instruments Incorporated.
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Copyright 1993, Texas Instruments Incorporated
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ꢟ ꢣ ꢠ ꢟꢘ ꢙꢭ ꢛꢚ ꢞ ꢦꢦ ꢤꢞ ꢜ ꢞ ꢝ ꢣ ꢟ ꢣ ꢜ ꢠ ꢨ
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀ ꢁꢂ ꢃ ꢄꢄ ꢅꢁ ꢆ
ꢇꢃ ꢈꢂ ꢉꢊ ꢋ ꢌꢍ ꢊ ꢈꢎꢂ ꢏꢍ ꢃꢐ ꢑ ꢒꢐ ꢎ
ꢓꢑ ꢈ ꢔ ꢊꢆ ꢕ ꢍꢈꢂꢈꢐ ꢊ ꢇ ꢌꢈ ꢖꢌꢈ ꢍ
SCAS057A − JULY 1987 − REVISED APRIL 1993
†
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 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 pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −ā65°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 clamp-current ratings are observed.
recommended operating conditions
MIN NOM
MAX
UNIT
V
Supply voltage
3
2.1
5
5.5
V
CC
IH
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3 V
= 4.5 V
= 5.5 V
= 3 V
3.15
3.85
V
High-level input voltage
V
V
0.9
1.35
1.65
= 4.5 V
= 5.5 V
V
IL
Low-level input voltage
V
V
Input voltage
0
0
V
V
V
I
CC
Output voltage
V
CC
−4
O
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3 V
= 4.5 V
= 5.5 V
= 3 V
−24
−24
12
I
High-level output current
Low-level output current
mA
mA
OH
= 4.5 V
= 5.5 V
24
I
OL
24
∆t/∆v
Input transition rise or fall rate
Operating free-air temperature
0
10
ns/V
T
A
−40
85
°C
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀ ꢁꢂ ꢃ ꢄꢄꢅ ꢁꢆ
ꢇ ꢃꢈꢂꢉꢊꢋ ꢌꢍꢊ ꢈꢎꢂ ꢏꢍ ꢃꢐ ꢑ ꢒꢐ ꢎ
ꢓ ꢑꢈ ꢔꢊ ꢆ ꢕꢍꢈꢂꢈ ꢐꢊ ꢇ ꢌꢈ ꢖꢌ ꢈꢍ
SCAS057A − JULY 1987 − REVISED APRIL 1993
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
A
= 25°C
PARAMETER
TEST CONDITIONS
V
MIN
MAX
UNIT
CC
MIN
2.9
TYP
MAX
3 V
4.5 V
5.5 V
3 V
2.9
4.4
4.4
I
I
= − 50 µA
OH
5.4
5.4
= − 4 mA
2.58
3.94
4.94
2.48
3.8
V
OH
V
OH
4.5 V
5.5 V
5.5 V
3 V
I
I
= − 24 mA
OH
4.8
†
= −75 mA
3.85
OH
0.1
0.1
0.1
0.1
0.1
0.44
0.44
0.44
1.65
1
4.5 V
5.5 V
3 V
I
I
= 50 µA
OL
0.1
= 12 mA
= 24 mA
0.36
0.36
0.36
V
OL
V
OL
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5 V
I
I
OL
†
= 75 mA
OL
I
I
I
OE or DIR
V = V
or GND
0.1
0.5
8
µA
µA
µA
pF
pF
I
I
CC
‡
A or B ports
V
= V
O CC
or GND
5
OZ
CC
V = V
or GND,
or GND
I = 0
O
80
I
CC
C
C
OE or DIR
V = V
4
i
I
CC
A or B ports
V
= V
O CC
or GND
5 V
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 current.
OZ
switching characteristics over recommended operating free-air temperature range,
= 3.3 V 0.3 V (unless otherwise noted) (see Figure 1)
V
CC
T
A
= 25°C
TYP
7.4
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
ns
MIN
1.5
1.5
1.5
1.5
1.5
1.5
MAX
10.1
8.7
t
t
t
t
t
t
1.5
1.5
1.5
1.5
1.5
1.5
11.3
10
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
OE
B or A
A or B
A or B
6.6
9.4
11.8
11.4
10.1
10.9
13.3
13
ns
8.9
8.3
10.9
12
OE
ns
8.9
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
ꢀ ꢁꢂ ꢃ ꢄꢄ ꢅꢁ ꢆ
ꢇꢃ ꢈꢂ ꢉꢊ ꢋ ꢌꢍ ꢊ ꢈꢎꢂ ꢏꢍ ꢃꢐ ꢑ ꢒꢐ ꢎ
ꢓꢑ ꢈ ꢔ ꢊꢆ ꢕ ꢍꢈꢂꢈꢐ ꢊ ꢇ ꢌꢈ ꢖꢌꢈ ꢍ
SCAS057A − JULY 1987 − REVISED APRIL 1993
switching characteristics over recommended operating free-air temperature range,
V
= 5 V 0.5 V (unless otherwise noted) (see Figure 1)
CC
T
A
= 25°C
TYP
5.4
5
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
MIN
MAX
UNIT
ns
MIN
1.5
1.5
1.5
1.5
1.5
1.5
MAX
7.7
6.8
9.2
8.7
8.8
9
t
t
t
t
t
t
1.5
1.5
1.5
1.5
1.5
1.5
8.6
7.9
10.4
10
PLH
PHL
PZH
PZL
PHZ
PLZ
A or B
OE
B or A
A or B
A or B
7
ns
6.6
7.1
7.2
9.4
9.8
OE
ns
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
46
9
C
Power dissipation capacitance per transceiver
C
pF
pd
PARAMETER MEASUREMENT INFORMATION
2× V
CC
TEST
S1
Open
2 × V
S1
t
t
t
/t
500 Ω
Open
GND
PLH PHL
From Output
Under Test
/t
PLZ PZL
CC
GND
/t
PHZ PZH
C
= 50 pF
L
500 Ω
(see Note A)
V
CC
Output
Control
(low-level
enabling)
LOAD CIRCUIT FOR OUTPUTS
50%
50%
0 V
t
PZL
t
PLZ
≈V
V
CC
CC
Input
(see Note B)
Output
Waveform 1
50%
50%
50%V
CC
20% V
80% V
CC
0 V
S1 at 2 × V
(see Note C)
CC
V
OL
t
t
PLH
PHZ
t
PHL
t
PZH
Output
Waveform 2
S1 at GND
V
OH
V
OH
Output
(see Note D)
CC
50%V
CC
50% V
50%V
CC
CC
V
OL
(see Note C)
0 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A. C includes probe and jig capacitance.
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
For testing pulse duration: t = t = 1 to 3 ns. Pulse polarity can be either high-to-low-to-high or low-to-high-to-low.
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 transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
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