IDT54FCT2245ATQB 查看數據表（PDF） - Integrated Device Technology
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IDT54FCT2245ATQB Datasheet PDF : 8 Pages
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IDT54/74FCT245T/AT/CT/DT - 2245T/AT/CT, IDT54/74FCT640T/AT/CT, IDT54/74FCT645T/AT/CT/DT
FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
FUNCTION TABLE(2)
Pin Names
OE
T/R
A0-A7
B0-B7
Description
Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Inputs or 3-State Outputs
Side B Inputs or 3-State Outputs
2539 tbl 01
Inputs
OE
T/R
Outputs
L
L
Bus B Data to Bus A(1)
L
H
Bus B Data to Bus B(1)
H
X
High Z State
NOTES:
1. 640 is inverting from input to output.
2. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
2539 tbl 02
ABSOLUTE MAXIMUM RATINGS(1)
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:
2539 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.
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:
2539 lnk 04
1. This parameter is measured at characterization but not tested.
6.9
2
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