![](http://datasheet.mmic.net.cn/330000/IDT74FCT162646AT_datasheet_16413779/IDT74FCT162646AT_3.png)
IDT54/74FCT16646T/AT/CT/ET, 162646T/AT/CT/ET
FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
5.13
3
PIN DESCRIPTION
FUNCTION TABLE
(2)
CAPACITANCE
(T
A
= +25
°
C, f = 1.0MHz)
2540 tbl 01
NOTE:
1. This parameter is measured at characterization but not tested.
2540 tbl 02
NOTES:
1. The data output functions may be enabled or disabled by various signals at the x
OE
or xDIR inputs. Data
input functions are always enabled, i.e. data at the bus pins will be stored on every LOW-to-HIGH transition
on the clock inputs.
2. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
↑
= LOW-to-HIGH Transition
2540 tbl 03
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
C
IN
Parameter
(1)
Input
Capacitance
I/O
Capacitance
Conditions
V
IN
= 0V
Typ.
3.5
Max.
6.0
Unit
pF
C
I/O
V
OUT
= 0V
3.5
8.0
pF
Pin Names
xAx
Description
Data Register A Inputs
Data Register B Outputs
Data Register B Inputs
Data Register A Outputs
xBx
xCLKAB, xCLKBA Clock Pulse Inputs
xSAB, xSBA
xDIR, x
OE
Output Data Source Select Inputs
Output Enable Inputs
Inputs
Data I/O
(1)
Operation or Function
x
OE
H
H
L
L
L
L
xDIR
X
X
L
L
H
H
xCLKAB
H or L
↑
X
X
X
H or L
xCLKBA
H or L
↑
X
H or L
X
X
xSAB
X
X
X
X
L
H
xSBA
X
X
L
H
X
X
xAx
Input
xBx
Input
Isolation
Store A and B Data
Real Time B Data to A Bus
Stored B Data to A Bus
Real Time A Data to B Bus
Stored A Data to B Bus
Output
Input
Input
Output
Symbol
V
TERM(2)
Terminal Voltage with Respect to
GND
V
TERM(3)
Terminal Voltage with Respect to
GND
Description
Max.
Unit
V
–0.5 to +7.0
–0.5 to
V
CC
+0.5
–65 to +150
–60 to +120 mA
V
T
STG
I
OUT
Storage Temperature
DC Output Current
°
C
2540 tbl 04
NOTES:
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.
2. All device terminals except FCT162XXXT Output and I/O terminals.
3. Output and I/O terminals for FCT162XXXT.