TI SN54BCT543FK

SN54BCT543, SN74BCT543
OCTAL REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS026C – NOVEMBER 1988 – REVISED APRIL 1994
•
•
•
•
SN54BCT543 . . . JT OR W PACKAGE
SN74BCT543 . . . DW OR NT PACKAGE
(TOP VIEW)
State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
3-State True Outputs
Back-to-Back Registers for Storage
ESD Protection Exceeds 2000 V
Per MIL-STD-883C, Method 3015
Package Options Include Plastic
Small-Outline Packages (DW), Ceramic
Chip Carriers (FK) and Flatpacks (W), and
Plastic and Ceramic 300-mil DIPs (JT, NT)
LEBA
OEBA
A1
A2
A3
A4
A5
A6
A7
A8
CEAB
GND
description
The ′BCT543 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.
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
VCC
CEBA
B1
B2
B3
B4
B5
B6
B7
B8
LEAB
OEAB
A1
OEBA
LEBA
NC
VCC
SN54BCT543 . . . FK PACKAGE
(TOP VIEW)
The A-to-B enable (CEAB) input must be low in
order to enter data from A or to output data from
B. If CEAB is low and LEAB is low, the A-to-B
latches are 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.
6
24
7
23
8
22
9
21
10
20
11
19
12 13 14 15 16 17 18
B2
B3
B4
NC
B5
B6
B7
A8
CEAB
GND
NC
OEAB
LEAB
B8
The SN54BCT543 is characterized for operation
over the full military temperature range of – 55°C
to 125°C. The SN74BCT543 is characterized for
operation from 0°C to 70°C.
3 2 1 28 27 26
25
4
5
A2
A3
A4
NC
A5
A6
A7
CEBA
B1
•
NC – No internal connection
FUNCTION TABLE†
INPUTS
CEAB
LEAB
OEAB
A
OUTPUT
B
H
X
X
X
Z
X
X
H
X
Z
L
H
L
X
L
L
L
L
B0‡
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  1994, 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
2–1
SN54BCT543, SN74BCT543
OCTAL REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS026C – NOVEMBER 1988 – REVISED APRIL 1994
logic symbol†
2
1EN3
OEBA
23
G1
CEBA
1
1C5
LEBA
13
2EN4
OEAB
11
G2
CEAB
14
2C6
LEAB
A1
A2
A3
A4
A5
A6
A7
A8
3
4
3
1
5D
6D
1
4
22
21
5
20
6
19
7
18
8
17
9
16
10
15
B1
B2
B3
B4
B5
B6
B7
B8
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
OEBA
CEBA
LEBA
OEAB
CEAB
LEAB
A1
2
23
1
13
11
14
C1
3
1D
C1
1D
To Seven Other Channels
Pin numbers shown are for the DW, JT, NT, and W packages.
2–2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
22
B1
SN54BCT543, SN74BCT543
OCTAL REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS026C – NOVEMBER 1988 – REVISED APRIL 1994
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 7 V
Input voltage range: Control inputs (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 7 V
I/O ports (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 5.5 V
Voltage range applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . . . – 0.5 V to 7 V
Voltage range applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to VCC
Input clamp current, IIK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30 mA
Current into any output in the low state: SN54BCT543 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
SN74BCT543 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Operating free-air temperature range: SN54BCT543 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74BCT543 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 and output voltage ratings may be exceeded if the input and output current ratings are observed.
recommended operating conditions
SN54BCT543
SN74BCT543
MIN
NOM
MAX
MIN
NOM
MAX
4.5
5
5.5
4.5
5
5.5
VCC
VIH
Supply voltage
VIL
IIK
Low-level input voltage
Input clamp current
IOH
IOL
High-level output current
Low-level output current
48
TA
Operating free-air temperature
High-level input voltage
2
2
0.8
– 55
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
V
V
0.8
V
–18
–18
mA
– 12
– 15
mA
64
mA
70
°C
125
0
2–3
SN54BCT543, SN74BCT543
OCTAL REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS026C – NOVEMBER 1988 – REVISED APRIL 1994
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VCC = 4.5 V,
VOH
II
IIH‡
IIL‡
IOS§
ICCL
ICCH
ICCZ
Ci
A or B port
Control input
A or B port
Control input
A or B port
A or B port
A or B port
MIN
II = –18 mA
IOH = – 3 mA
VCC = 4.5 V
VOL
SN54BCT543
TYP†
MAX
TEST CONDITIONS
–1.2
IOH = –12 mA
IOH = –15 mA
VCC = 4
4.5
5V
IOL = 48 mA
IOL = 64 mA
VCC = 5.5 V,
VI = 5.5 V
VCC = 5
5.5
5V
V,
VI = 2
2.7
7V
VCC = 5
5.5
5V
V,
VI = 0
0.5
5V
VCC = 5.5 V,
VO = 0
SN74BCT543
TYP†
MAX
MIN
2.4
3.3
2
3.2
–1.2
2.4
3.1
0.55
0.42
–100
45
VCC = 5.5 V
VCC = 5 V,
0.55
0.4
0.4
70
70
20
20
– 0.65
– 0.65
– 0.6
– 0.6
– 225
VCC = 5.5 V
VCC = 5.5 V
V
3.3
V
2
0.38
UNIT
–100
mA
µA
mA
– 225
mA
71
mA
5
8
mA
9
15
mA
71
45
5
8
9
15
Control input
VI = 2.5 V or 0.5 V
6
Cio
A or B port
VCC = 5 V,
VO = 2.5 V or 0.5 V
16
† All typical values are at VCC = 5 V, TA = 25°C.
‡ For I/O ports, the parameters IIH and IIL include the off-state output current.
§ Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
V
6
pF
16
pF
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
VCC = 5 V,
TA = 25°C
MIN
MAX
SN54BCT543
MIN
MAX
SN74BCT543
MIN
UNIT
MAX
tw
tsu
Pulse duration, LEAB or LEBA low
7
8
7
ns
Setup time, data before LEAB or LEBA↑
High or low
4.5
5.5
4.5
ns
th
Hold time, data after LEAB or LEBA↑
High or low
1.5
1.5
1.5
ns
2–4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN54BCT543, SN74BCT543
OCTAL REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS026C – NOVEMBER 1988 – REVISED APRIL 1994
switching characteristics (see Note 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = 25°C
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
TA = MIN to MAX†
′BCT543
tPLH
tPHL
A or B
B or A
tPLH
tPHL
LE
A or B
tPZH
tPZL
OE
A or B
tPHZ
tPLZ
OE
A or B
tPZH
tPZL
CE
A or B
tPHZ
tPLZ
CE
A or B
SN54BCT543
UNIT
SN74BCT543
MIN
TYP
MAX
MIN
MAX
MIN
MAX
2
5.7
7.5
2
9.9
2
8.8
2
6.3
8.2
2
9.7
2
9.6
2
8.2
10.3
2
13.9
2
12.9
2
8.5
10.6
2
13.2
2
12.7
1
6.8
8.6
1
11.4
1
10.7
1
8.7
10.8
1
12.8
1
12.3
1
5.5
7.2
1
8.8
1
8.1
1
4.7
6.4
1
8.1
1
7.2
1
7.6
9.8
1
12.8
1
12
1
9.5
11.6
1
13.8
1
13.5
1
5.8
7.5
1
9.3
1
8.5
1
4.8
6.7
1
8.4
1
7.6
ns
ns
ns
ns
ns
ns
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 2: Load circuits and voltage waveforms are shown in Section 1.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
2–5
SN54BCT543, SN74BCT543
OCTAL REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS026C – NOVEMBER 1988 – REVISED APRIL 1994
2–6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
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Copyright  1998, Texas Instruments Incorporated