SN54HC623FK [TI]
OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS; 八路总线收发器与3态输出
| 型号： | SN54HC623FK |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| 文件： | 总6页 (文件大小：114K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54HC623, SN74HC623
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS149B – DECEMBER 1982 – REVISED MAY 1997
SN54HC623 . . . J OR W PACKAGE
SN74HC623 . . . DW OR N PACKAGE
(TOP VIEW)
Lock Bus-Latch Capability
True Logic
High-Current 3-State Outputs Can Drive up
to 15 LSTTL Loads
OEAB
A1
V
CC
OEBA
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
Package Options Include Plastic
Small-Outline (DW) and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
A2
A3
A4
A5
A6
A7
A8
GND
B1
B2
B3
B4
B5
description
13 B6
12 B7
These octal bus transceivers are designed for
asynchronous two-way communication between
data buses. The control-function implementation
allows for maximum flexibility in timing.
11
B8
SN54HC623 . . . FK PACKAGE
(TOP VIEW)
The ’HC623 allow data transmission from the
A bus to the B bus or from the B bus to the A bus,
depending upon the logic levels at the
output-enable (OEAB and OEBA) inputs.
3
2
1
20 19
18
B1
B2
B3
A3
A4
A5
A6
A7
4
5
6
7
8
OEAB and OEBA disable the device so that the
buses are effectively isolated. The dual-enable
configuration gives the transceivers the capability
to store data by simultaneously enabling OEAB
and OEBA. Each output reinforces its input in this
transceiver configuration. When both OEAB and
OEBA are enabled and all other data sources to
thetwosetsofbuslinesareinthehigh-impedance
state, both sets of bus lines (16 total) remain at
their last states. The 8-bit codes appearing on the
two sets of buses are identical.
17
16
15 B4
14
9 10 11 12 13
B5
The SN54HC623 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN74HC623 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
OPERATION
OEBA
OEAB
L
H
H
L
H
L
B data to A bus
A data to B bus
Isolation
B data to A bus,
A data to B bus
L
H
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 1997, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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
SN54HC623, SN74HC623
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS149B – DECEMBER 1982 – REVISED MAY 1997
†
logic symbol
19
EN1
EN2
OEBA
OEAB
1
2
18
A1
B1
B2
1
2
17
16
15
3
4
A2
A3
B3
B4
5
6
A4
A5
14
13
12
B5
B6
B7
7
8
9
A6
A7
A8
11
B8
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
19
1
OEBA
OEAB
2
18
A1
B1
To Seven Other Transceivers
‡
absolute maximum ratings over operating free-air temperature range
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
CC
I
Input clamp current, I (V < 0 or V > V ) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
IK
I
CC
Output clamp current, I
(V < 0 or V > V ) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
OK
O O CC
Continuous output current, I (V = 0 to V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 mA
Continuous current through V
Package thermal impedance, θ (see Note 2): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
O
O
CC
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±70 mA
JA
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°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 voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54HC623, SN74HC623
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS149B – DECEMBER 1982 – REVISED MAY 1997
recommended operating conditions
SN54HC623
MIN NOM
SN74HC623
MIN NOM
UNIT
MAX
MAX
V
V
Supply voltage
2
1.5
3.15
4.2
0
5
6
2
1.5
3.15
4.2
0
5
6
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 2 V
High-level input voltage
= 4.5 V
= 6 V
V
V
IH
= 2 V
0.5
1.35
1.8
0.5
1.35
1.8
V
IL
Low-level input voltage
= 4.5 V
= 6 V
0
0
0
0
V
V
Input voltage
0
V
V
0
V
V
V
V
I
CC
CC
Output voltage
0
0
O
CC
CC
V
CC
V
CC
V
CC
= 2 V
0
1000
500
400
125
0
1000
500
400
85
t
Input transition (rise and fall) time
Operating free-air temperature
= 4.5 V
= 6 V
0
0
ns
t
0
0
T
–55
–40
°C
A
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
T
= 25°C
SN54HC623
SN74HC623
A
PARAMETER
TEST CONDITIONS
V
UNIT
CC
MIN
TYP
MAX
MIN
1.9
4.4
5.9
3.7
5.2
MAX
MIN
1.9
MAX
2 V
4.5 V
6 V
1.9 1.998
4.4 4.499
5.9 5.999
I
= –20 µA
4.4
OH
V
V
V = V or V
IH
5.9
V
OH
I
IL
IL
I
I
= –6 mA
4.5 V
6 V
3.98
5.48
4.3
5.8
3.84
5.34
OH
= –7.8 mA
OH
2 V
0.002
0.001
0.001
0.17
0.1
0.1
0.1
0.1
0.1
0.4
0.4
0.1
0.1
I
= 20 µA
4.5 V
6 V
OL
V = V or V
0.1
0.1
V
OL
I
IH
I
I
= 6 mA
4.5 V
6 V
0.26
0.26
0.33
0.33
OL
= 7.8 mA
0.15
OL
OEAB or
OEBA
I
V = V
or 0
6 V
±0.1
±100
±1000
±1000
nA
I
I
CC
CC
I
I
A or B
V
O
= V
or 0
6 V
6 V
±0.01
±0.5
±10
±5
µA
µA
OZ
CC
V = V
I
or 0,
I
O
= 0
8
160
80
CC
OEAB or
OEBA
C
2 V to 6 V
3
10
10
10
pF
i
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54HC623, SN74HC623
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS149B – DECEMBER 1982 – REVISED MAY 1997
switching characteristics over recommended operating free-air temperature range, C = 50 pF
L
(unless otherwise noted) (see Figure 1)
T
A
= 25°C
TYP
29
10
8
SN54HC623
SN74HC623
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
V
UNIT
CC
MIN
MAX
105
21
MIN
MAX
160
32
MIN
MAX
130
26
2 V
4.5 V
6 V
t
t
t
t
t
t
A or B
OEBA
OEBA
OEAB
OEAB
B or A
ns
pd
en
dis
en
dis
t
18
27
22
2 V
112
27
20
40
18
16
112
27
20
40
18
16
20
8
210
42
315
63
265
53
A
A
4.5 V
6 V
ns
ns
ns
ns
ns
36
54
45
2 V
150
30
225
45
190
38
4.5 V
6 V
26
38
32
2 V
210
42
315
63
265
53
B
4.5 V
6 V
36
54
45
2 V
150
30
225
45
190
38
B
4.5 V
6 V
26
38
32
2 V
60
90
75
A or B
4.5 V
6 V
12
18
15
6
10
15
13
switching characteristics over recommended operating free-air temperature range, C = 150 pF
L
(unless otherwise noted) (see Figure 1)
T
A
= 25°C
TYP
44
SN54HC623
SN74HC623
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
V
UNIT
CC
MIN
MAX
135
27
MIN
MAX
200
40
MIN
MAX
170
34
2 V
4.5 V
6 V
t
pd
t
en
t
t
A or B
OEBA
OEAB
B or A
14
ns
11
23
34
29
2 V
130
31
270
54
405
81
335
67
A
4.5 V
6 V
ns
ns
ns
23
46
69
56
2 V
130
31
270
54
405
81
335
67
B
4.5 V
6 V
23
46
69
56
2 V
45
210
42
315
63
265
53
A or B
4.5 V
6 V
17
13
36
53
45
operating characteristics, T = 25°C
A
PARAMETER
Power dissipation capacitance per transceiver
TEST CONDITIONS
TYP
UNIT
C
No load
40
pF
pd
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54HC623, SN74HC623
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS149B – DECEMBER 1982 – REVISED MAY 1997
PARAMETER MEASUREMENT INFORMATION
V
CC
PARAMETER
R
C
L
S1
S2
L
50 pF
or
150 pF
t
Open
Closed
Closed
Open
S1
S2
PZH
Test
Point
t
t
1 kΩ
1 kΩ
en
R
t
L
PZL
From Output
Under Test
t
t
Open
Closed
Open
PHZ
PLZ
50 pF
C
dis
L
Closed
(see Note A)
50 pF
or
150 pF
t
or t
––
Open
Open
pd
t
LOAD CIRCUIT
V
CC
Input
90%
t
90%
50%
10%
50%
10%
0 V
t
r
f
VOLTAGE WAVEFORM
INPUT RISE AND FALL TIMES
Output
Control
(Low-Level
Enabling)
V
CC
V
CC
Input
50%
50%
50%
50%
0 V
0 V
t
t
PLH
PHL
90%
t
t
PLZ
PZL
V
V
OH
≈ V
50%
≈ V
Output
Waveform 1
(See Note B)
In-Phase
Output
CC
CC
90%
50%
10%
50%
10%
10%
90%
OL
V
OL
t
t
r
f
f
t
t
t
PZH
PHL
90%
PLH
V
V
OH
V
OH
Output
Waveform 2
(See Note B)
90%
t
Out-of-
Phase
Output
50%
10%
50%
10%
50%
≈ 0 V
OL
t
t
PHZ
r
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
NOTES: A.
C includes probe and test-fixture capacitance.
L
B. 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.
C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR ≤ 1 MHz, Z = 50 Ω, t = 6 ns, t = 6 ns.
O
r
f
D. The outputs are measured one at a time with one input transition per measurement.
E.
F.
G.
t
t
t
and t
and t
and t
are the same as t
are the same as t
are the same as t
.
dis
en
.
pd
PLZ
PZL
PLH
PHZ
PZH
PHL
.
Figure 1. Load Circuit and Voltage Waveforms
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
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.
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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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