IDT54FCT543AD 查看數據表（PDF） - Integrated Device Technology
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IDT54FCT543AD Datasheet PDF : 7 Pages
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IDT54/74FCT543/A/C
FAST CMOS OCTAL LATCHED TRANSCEIVER
PIN CONFIGURATIONS
IDT54/74FCT861 10-BIT TRANSCEIVERS
LEBA
OEBA
A0
A1
A2
A3
A4
A5
A6
A7
CEAB
GND
1
24
2
23
3
22
4 P24-1, 21
5 D24-1, 20
SO24-2
6
&
19
7 E24-1 18
8
17
9
16
10
15
11
14
12
13
Vcc
CEBA
B0
B1
B2
B3
B4
B5
B6
B7
LEAB
OEAB
DIP/SOIC/CERPACK
TOP VIEW
MILITARY AND COMMERCIAL TEMPERATURE RANGES
INDEX
4 3 2 28 27 26
A1 5
A2 6
1
25 B1
24 B2
A3 7
23 B3
NC 8
L28-1
22 NC
A4 9
21 B4
A5 10
20 B5
A6 11
19 B6
12 13 14 15 16 17 18
2614 drw 02
LCC
TOP VIEW
PIN DESCRIPTION
Pin Names
OEAB
OEBA
CEAB
CEBA
LEAB
LEBA
Description
A-to-B Output Enable Input (Active LOW)
B-to-A Output Enable Input (Active LOW)
A-to-B Enable Input (Active LOW)
B-to-A Enable Input (Active LOW)
A-to-B Latch Enable Input (Active LOW)
B-to-A Latch Enable Input (Active LOW)
A0–A7
A-to-B Data Inputs or B-to-A 3-State Outputs
B0–B7
B-to-A Data Inputs or A-to-B 3-State Outputs
2614 tbl 02
LOGIC SYMBOL
FUNCTION TABLE (1,2)
For A-to-B (Symmetric with B-to-A)
Inputs
CEAB LEAB OEAB
Latch
Status
A-to-B
H
—
— Storing
—
H
— Storing
—
—
H
—
L
L
L
Transparent
L
H
L
Storing
Output
Buffers
B0–B7
High Z
—
High Z
Current A Inputs
Previous* A Inputs
NOTES:
1. * Before LEAB LOW-to-HIGH Transition
2614 tbl 01
H = HIGH Voltage Level
L = LOW Voltage Level
— = Don’t Care or Irrelevant
2. A-to-B data flow shown; B-to-A flow control is the same, except using
CEBA, LEBA and OEBA.
LEAB CEAB CEBA LEBA
A0
A1
A2
A3
A4
A5
A6
A7
OEBA
B0
B1
B2
B3
B4
B5
B6
B7
OEAB
2614 drw 03
7.17
2
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