IDT54FCT2543AT Просмотр технического описания (PDF) - Integrated Device Technology
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IDT54FCT2543AT Datasheet PDF : 7 Pages
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IDT54/74FCT543T/AT/CT/DT - 2543T/AT/CT
FAST CMOS OCTAL LATCHED TRANSCEIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
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 SO24-7 19
7 SO24-8 18
8
&
17
9 E24-1 16
10
15
11
14
12
13
Vcc
CEBA
B0
B1
B2
B3
B4
B5
B6
B7
LEAB
OEAB
DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
2613 drw 02
INDEX
4 3 2 28 27 26
A1 5
A2 6
1
25 B1
24 B2
A3 7
23 B3
NC 8
A4 9
L28-1
22 NC
21 B4
A5 10
20 B5
A6 11
19 B6
12 13 14 15 16 17 18
LCC
TOP VIEW
2613 drw 03
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
ABSOLUTE MAXIMUM RATINGS(1)
2613 tbl 01
Symbol
Rating
VTERM(2) Terminal Voltage
with Respect to
GND
VTERM(3) Terminal Voltage
with Respect to
GND
TA
Operating
Temperature
TBIAS Temperature
Under Bias
TSTG Storage
Temperature
PT
Power Dissipation
Commercial
–0.5 to +7.0
–0.5 to
VCC +0.5
0 to +70
–55 to +125
–55 to +125
0.5
Military
–0.5 to +7.0
–0.5 to
VCC +0.5
–55 to +125
–65 to +135
–65 to +150
0.5
Unit
V
V
°C
°C
°C
W
IOUT
DC Output
–60 to +120 –60 to +120 mA
Current
NOTES:
2613 lnk 03
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-
INGS may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions
above those indicated in the operational sections of this specification is
not implied. Exposure to absolute maximum rating conditions for
extended periods may affect reliability. No terminal voltage may exceed
VCC by +0.5V unless otherwise noted.
2. Input and VCC terminals only.
3. Outputs and I/O terminals only.
FUNCTION TABLE(1, 2)
For A-to-B (Symmetric with B-to-A)
Inputs
CEAB LEAB OEAB
Latch
Status
A-to-B
Output
Buffers
B0–B7
H
—
— Storing
High Z
—
H
— Storing
—
—
—
H
—
High Z
L
L
L
Transparent Current A Inputs
L
H
L
Storing
Previous* A Inputs
NOTES:
1. * Before LEAB LOW-to-HIGH Transition
2613 tbl 02
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.
CAPACITANCE (TA = +25°C, f = 1.0MHz)
Symbol Parameter(1) Conditions Typ. Max. Unit
CIN
Input
VIN = 0V
6
10 pF
Capacitance
COUT Output
VOUT = 0V 8
12 pF
Capacitance
NOTE:
2613 lnk 04
1. This parameter is measured at characterization but not tested.
6.17
2
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