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SCAS058A − JULY 1987 − REVISED APRIL 1993
74AC11623
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
•
•
•
•
•
•
Local Bus-Latch Capability
Flow-Through Architecture Optimizes PCB
Layout
Center-Pin V
CC
and GND Configurations
Minimize High-Speed Switching Noise
EPIC
(Enhanced-Performance Implanted
CMOS) 1-µm Process
500-mA Typical Latch-Up Immunity at
125°C
Package Options Include Plastic
Small-Outline Packages, and Standard
Plastic 300-mil DIPs
DW OR NT PACKAGE
(TOP VIEW)
description
A1
A2
A3
A4
GND
GND
GND
GND
A5
A6
A7
A8
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
OEAB
B1
B2
B3
B4
V
CC
V
CC
B5
B6
B7
B8
OEBA
These octal bus transceivers are designed for asynchronous communication between data buses. The control
function implementation allows for maximum flexibility in timing.
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 output-enable (OEAB or OEBA) inputs. The output-enable inputs can be used to disable the device
so that the buses are effectively isolated.
The dual-enable configuration gives these devices the capability to store data by simultaneous enabling of
OEAB and OEBA. Each output reinforces its input in this transceiver configuration. Thus, when both control
inputs are enabled and all other data sources to the two sets of bus lines are at high impedance, both sets of
bus lines (16 in all) will remain at their last states. The 8-bit codes appearing on the two sets of buses will be
complementary for the 74AC11623.
The 74AC11623 is characterized for operation from − 40°C to 85°C.
FUNCTION TABLE
INPUTS
OEBA
L
H
H
L
OEAB
L
H
L
H
OPERATION
B data to A bus
A data to B bus
Isolation
B data to A bus,
A data to B bus
EPIC is a trademark of 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.
Copyright
1993, Texas Instruments Incorporated
POST OFFICE BOX 655303
POST OFFICE BOX 1443
•
HOUSTON, TEXAS 77251−1443
•
DALLAS, TEXAS 75265
1
SCAS058A − JULY 1987 − REVISED APRIL 1993
74AC11623
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
logic symbol
†
OEBA
OEAB
A1
13
24
1
1
2
3
4
9
10
11
12
2
22
21
20
17
16
15
14
EN1
EN2
23
logic diagram (positive logic)
OEBA
13
OEAB
B1
24
A2
A3
A4
A5
A6
A7
A8
B2
B3
B4
B5
B6
B7
B8
A1
1
23
B1
To 7 Other Channels
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
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 V
CC
+ 0.5 V
Output voltage range, V
O
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to V
CC
+ 0.5 V
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
20 mA
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
50 mA
Continuous output current, I
O
(V
O
= 0 to V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
50 mA
Continuous current through V
CC
or GND pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
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 clamp-current ratings are observed.
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
SCAS058A − JULY 1987 − REVISED APRIL 1993
74AC11623
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
recommended operating conditions
MIN
VCC
VIH
Supply voltage
VCC = 3 V
VCC = 4.5 V
VCC = 5.5 V
VCC = 3 V
VIL
VI
VO
IOH
Low-level input voltage
Input voltage
Output voltage
VCC = 3 V
VCC = 4.5 V
VCC = 5.5 V
VCC = 3 V
IOL
∆t/∆v
TA
Low-level output current
Input transition rise or fall rate
Operating free-air temperature
VCC = 4.5 V
VCC = 5.5 V
0
−40
VCC = 4.5 V
VCC = 5.5 V
0
0
3
2.1
3.15
3.85
0.9
1.35
1.65
VCC
VCC
−4
−24
−24
12
24
24
10
85
ns/V
°C
mA
mA
V
V
V
V
NOM
5
MAX
5.5
UNIT
V
High-level input voltage
High-level output current
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
3V
IOH = − 50
µA
VOH
IOH = − 4 mA
IOH = − 24 mA
IOH = − 75 mA†
IOL = 50
µA
VOL
IOL = 12 mA
IOL = 24 mA
IOL = 75 mA†
VI = VCC or GND
VO = VCC or GND
VI = VCC or GND,
VI = VCC or GND
VO = VCC or GND
IO = 0
4.5 V
5.5 V
3V
4.5 V
5.5 V
5.5 V
3V
4.5 V
5.5 V
3V
4.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5.5 V
5V
5V
4
12
±
0.1
±
0.5
8
0.1
0.1
0.1
0.36
0.36
0.36
TA = 25°C
MIN
TYP
MAX
2.9
4.4
5.4
2.58
3.94
4.94
MIN
2.9
4.4
5.4
2.48
3.8
4.8
3.85
0.1
0.1
0.1
0.44
0.44
0.44
1.65
±1
±
5
80
µA
µA
µA
pF
pF
V
V
MAX
UNIT
II
IOZ‡
ICC
Ci
Cio
OEBA or OEAB
A or B ports
OEBA or OEAB
A or B ports
† 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 IOZ includes the input leakage current.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
3
SCAS058A − JULY 1987 − REVISED APRIL 1993
74AC11623
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V
±
0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
FROM
(INPUT)
A or B
OEBA
OEBA
OEAB
OEAB
TO
(OUTPUT)
B or A
A
A
B
B
TA = 25°C
MIN
TYP
MAX
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
6.8
6.3
8
7.9
7
8
8.2
8.3
7
8
9.2
8.2
10.6
10.4
8.7
9.9
10.4
10.8
8.8
9.9
MIN
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
MAX
10.5
9.3
12.2
11.6
9.3
10.7
12
12.2
9.4
10.6
ns
ns
ns
ns
ns
UNIT
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V
±
0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
FROM
(INPUT)
A or B
OEBA
OEBA
OEAB
OEAB
TO
(OUTPUT)
B or A
A
A
B
B
TA = 25°C
MIN
TYP
MAX
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
4.9
4.6
5.8
5.9
6.1
6.6
6.2
6.1
6.2
6.5
6.8
6.4
7.9
8.1
7.7
8.2
8
8.3
7.8
8.1
MIN
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
MAX
7.8
7.1
9
9.1
8.3
8.8
9.2
9.4
8.3
8.8
ns
ns
ns
ns
ns
UNIT
operating characteristics, V
CC
= 5 V, T
A
= 25
°
C
PARAMETER
Outputs enabled
Cpd
Power dissipation capacitance per transceiver
Outputs disabled
CL = 50 pF,
f = 1 MHz
TEST CONDITIONS
TYP
49
9
pF
UNIT
4
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
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