SN74F543DB [TI]
OCTAL REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS; 八路寄存收发器与3态输出
| 型号： | SN74F543DB |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | OCTAL REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS |
| 文件： | 总7页 (文件大小：99K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN74F543
OCTAL REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SDFS025B – D2942, MARCH 1987 – REVISED OCTOBER 1993
DB, DW, OR NT PACKAGE
(TOP VIEW)
• 3-State True Outputs
• Back-to-Back Registers for Storage
• Package Options Include Plastic
Small-Outline and Shrink Small-Outline
Packages and Standard Plastic 300-mil
DIPs
LEBA
OEBA
A1
1
24
V
CC
2
23 CEBA
22 B1
21 B2
20 B3
19 B4
18 B5
17 B6
16 B7
3
A2
A3
A4
A5
A6
A7
A8
4
5
description
6
7
The SN74F543 octal transceiver contains two
sets of D-type latches for temporary storage of
data flowing in either direction. Separate
latch-enable (LEAB or LEBA) and output enable
(OEAB or OEBA) inputs are provided for each
register to permit independent control in either
direction of data flow. The A outputs are
characterized to sink 24 mA while the B outputs
are characterized to sink 64 mA.
8
9
10
11
12
15
B8
14 LEAB
13 OEAB
CEAB
GND
The A-to-B enable (CEAB) input must be low in order to enter data from A or to output data from B. Having CEAB
low and LEAB low makes the A-to-B latches transparent; a subsequent low-to-high transition of LEAB puts the
A latches in the storage mode. With CEAB and OEAB both low, the 3-state B outputs are active and reflect the
data present at the output of the A latches. Data flow from B to A is similar, but requires using the CEBA, LEBA,
and OEBA inputs.
The SN74F543 is available in TI’s shrink small-outline package (DB), which provides the same I/O pin count
and functionality of standard small-outline packages in less than half the printed-circuit-board area.
The SN74F543 is characterized for operation from 0°C to 70°C.
†
FUNCTION TABLE
INPUTS
OUTPUT
B
CEAB
LEAB
OEAB
A
X
X
X
L
H
X
L
L
L
X
X
H
L
X
H
L
Z
Z
‡
B
0
L
L
L
L
H
H
†
‡
A-to-B data flow is shown; B-to-A flow control is the
same except that it uses CEBA, LEBA, and OEBA.
Output level before the indicated steady-state input
conditions were established.
Copyright 1993, 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.
2–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74F543
OCTAL REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SDFS025B – D2942, MARCH 1987 – REVISED OCTOBER 1993
†
logic symbol
2
OEBA
23
1EN3
G1
CEBA
1
1C5
2EN4
G2
LEBA
13
OEAB
11
CEAB
14
2C6
LEAB
3
22
A1
5D
4
B1
3
6D
21
20
19
4
B2
B3
B4
A2
5
A3
6
A4
7
18
17
16
A5
B5
B6
B7
8
A6
9
A7
15
10
B8
A8
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
2
OEBA
23
CEBA
1
LEBA
13
OEAB
11
CEAB
14
LEAB
C1
1D
3
A1
22
B1
C1
1D
To Seven Other Channels
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74F543
OCTAL REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SDFS025B – D2942, MARCH 1987 – REVISED OCTOBER 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 (excluding I/O ports) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –1.2 V to 7 V
I
Input current range, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30 mA to 5 mA
IK
Voltage range applied to any output in the disabled or power-off state . . . . . . . . . . . . . . . . . . . . –0.5 V to 5.5 V
Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
CC
Current into any output in the low state: A1–A8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA
B1–B8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
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-voltage ratings may be exceeded provided the input-current ratings are observed.
recommended operating conditions
MIN NOM
MAX
UNIT
V
V
V
V
Supply voltage
4.5
2
5
5.5
CC
IH
IL
High-level input voltage
Low-level input voltage
Input clamp current
V
0.8
–18
–3
V
I
IK
mA
A1–A8
B1–B8
A1–A8
B1–B8
I
High-level output current
mA
OH
OL
–15
24
I
Low-level output current
mA
64
T
A
Operating free-air temperature
0
70
°C
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74F543
OCTAL REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SDFS025B – D2942, MARCH 1987 – REVISED OCTOBER 1993
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
†
PARAMETER
TEST CONDITIONS
I = – 18 mA
MIN TYP
MAX
UNIT
V
IK
V
= 4.5 V,
= 4.5 V
–1.2
V
CC
CC
I
I
I
I
I
I
I
I
= – 1 mA
2.5
2.4
2.4
2
3.4
3.3
3.3
3.1
OH
OH
OH
OH
OH
OL
OL
A1–A8
B1–B8
= – 3 mA
V
V
OH
= – 3 mA
V
= – 15 mA
= – 1 mA to –3 mA
= 24 mA
Any output
A1–A8
V
V
= 4.75 V,
= 4.5 V
2.7
CC
0.3
0.5
0.55
0.1
V
OL
V
CC
B1–B8
= 64 mA
0.42
OE, LE, and CE
A and B ports
OE, LE, and CE
A and B ports
OE, LE, and CE
A and B ports
A1–A8
V = 7 V
I
I
I
I
I
V
CC
V
CC
V
CC
V
CC
= 5.5 V
= 5.5 V,
= 5.5 V,
= 5.5 V,
mA
µA
I
V = 5.5 V
I
1
20
‡
V = 2.7 V
I
IH
70
–1.2
–0.65
–150
–225
100
125
125
‡
V = 0.5 V
I
mA
mA
IL
–60
§
V
O
= 0
OS
B1–B8
–100
I
I
I
V
CC
V
CC
V
CC
= 5.5 V
= 5.5 V
= 5.5 V
67
83
83
mA
mA
mA
CCH
CCL
CCZ
†
‡
§
All typical values are at V
For I/O ports, the parameters I and I include the off-state output current.
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
= 5 V, T = 25°C.
A
IH IL
CC
timing requirements
V
T
= 5 V,
= 25°C
V
= 4.5 V to 5.5 V,
CC
A
CC
¶
T = MIN to MAX
A
UNIT
MIN
5
MAX
MIN
5
MAX
t
w
t
su
t
h
Pulse duration
ns
ns
ns
Setup time, data before latch enable
Hold time, data after latch enable
High or low
High or low
3
3.5
3.5
3
¶
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
2–4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN74F543
OCTAL REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS
SDFS025B – D2942, MARCH 1987 – REVISED OCTOBER 1993
switching characteristics (see Note 2)
V
C
R
= 5 V,
= 50 pF,
= 500 Ω,
= 25°C
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
CC
L
L
FROM
PARAMETER
TO
(OUTPUT)
= 500Ω,
UNIT
(INPUT)
†
T
A
T
A
= MIN to MAX
MIN
2.2
2.2
3.7
3.7
3.7
3.7
2.2
3.2
1.7
1.7
TYP
5.1
4.6
8.1
8.1
8.1
8.1
6.6
7.1
5.6
5.1
MAX
7.5
6.5
11
MIN
2.2
2.2
4.1
4.1
4.1
4.1
2.2
3.2
1.7
1.7
MAX
t
t
t
t
t
t
8.5
7.5
12.5
12.5
12.5
12.5
10
PLH
PHL
PLH
PHL
PLH
PHL
PZH
A or B
B or A
A
ns
ns
ns
ns
ns
LEBA
LEAB
11
11
B
11
t
9
A or B
A or B
OE or CE
OE or CE
t
10.5
8
12
PZL
t
9
PHZ
t
7.5
8.5
PLZ
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 2: Load circuits and waveforms are shown in Section 1.
2–5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
2–6
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.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
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
相关型号：
SN74F543DWRE4
Registered Bus Transceiver, F/FAST Series, 1-Func, 8-Bit, True Output, TTL, PDSO24, PLASTIC, SOIC-24
ROCHESTER
SN74F543DWRG4
Registered Bus Transceiver, F/FAST Series, 1-Func, 8-Bit, True Output, TTL, PDSO24, PLASTIC, SOIC-24
ROCHESTER
SN74F543NSR
IC F/FAST SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOP-24, Bus Driver/Transceiver
TI
SN74F543NSR
Registered Bus Transceiver, F/FAST Series, 1-Func, 8-Bit, True Output, TTL, PDSO24, GREEN, PLASTIC, SOP-24
ROCHESTER
SN74F543NSRE4
F/FAST SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOP-24
TI
SN74F543NSRG4
F/FAST SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOP-24
TI
©2020 ICPDF网 联系我们和版权申明