The IDT logo is a registered trademark of Integrated Device Technology, Inc.
JUNE 2002
DSC-5451/3
IDT54/74FCT162652T/AT/CT
FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
PIN CONFIGURATION
1
OEAB
1
CLKAB
1
SAB
ABSOLUTE MAXIMUM RATINGS
(1)
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Symbol
1
OEBA
1
CLKBA
1
SBA
Description
Max
–0.5 to 7
–0.5 to V
CC
+0.5
–65 to +150
–60 to +120
Unit
V
V
°C
mA
V
TERM
(2)
Terminal Voltage with Respect to GND
V
TERM
(3)
Terminal Voltage with Respect to GND
T
STG
I
OUT
Storage Temperature
DC Output Current
GND
1
A
1
1
A
2
GND
1
B
1
1
B
2
V
CC
1
A
3
1
A
4
1
A
5
V
CC
1
B
3
1
B
4
1
B
5
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS 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 FCT162XXX Output and I/O terminals.
3. Output and I/O terminals for FCT162XXX.
GND
1
A
6
1
A
7
1
A
8
2
A
1
2
A
2
2
A
3
GND
1
B
6
1
B
7
1
B
8
2
B
1
2
B
2
2
B
3
CAPACITANCE
(T
A
= +25°C, f = 1.0MHz)
Symbol
C
IN
C
OUT
Parameter
(1)
Input Capacitance
Output Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
4.5
5.5
Max.
6
8
Unit
pF
pF
GND
2
A
4
2
A
5
2
A
6
V
CC
2
A
7
2
A
8
GND
2
B
4
2
B
5
2
B
6
NOTE:
1. This parameter is measured at characterization but not tested.
V
CC
2
B
7
2
B
8
PIN DESCRIPTION
Pin Names
xAx
xBx
xCLKAB, xCLKBA
xSAB, xSBA
xOEAB, xOEBA
Description
Data Register A Inputs
Data Register B Outputs
Data Register B Inputs
Data Register A Outputs
Clock Pulse Inputs
Output Data Source Select Inputs
Output Enable Inputs
GND
2
SAB
2
CLKAB
GND
2
SBA
2
CLKBA
2
OEBA
2OEAB
SSOP/ TSSOP/ CERPACK
TOP VIEW
2
IDT54/74FCT162652T/AT/CT
FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
FUNCTION TABLE
Inputs
xOEAB
L
L
X
H
L
L
L
L
H
H
H
xOEBA
H
H
H
H
X
L
L
L
H
H
L
xCLKAB
H or L
↑
↑
↑
H or L
↑
X
X
X
H or L
H or L
xCLKBA
H or L
↑
H or L
↑
↑
↑
X
H or L
X
X
H or L
xSAB
X
X
X
X
(2)
X
X
X
X
L
H
H
xSBA
X
X
X
X
X
X
(2)
L
H
X
X
H
xAx
Input
Input
Intput
Unspecified
(1)
Output
Output
Input
Output
Data I/O
(1)
xBx
Input
Unspecified
(1)
Output
Input
Input
Input
Output
Output
Operation or Function
Isolation
Store A and B Data
Store A, Hold B
Store A in Both Registers
Hold A, Store B
Store B in both Registers
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
Stored A Data to B Bus and
Stored B Data to A Bus
NOTES:
1. The data output functions may be enabled or disabled by various signals at the xOEAB or xOEBA 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 clocks inputs.
2. Select control = L: clocks can occur simultaneously.
Select control = H: clocks must be staggered to load both registers.
3. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't care
↑
= LOW-to-HIGH Transition
3
IDT54/74FCT162652T/AT/CT
FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
BUS
A
BUS
B
BUS
A
BUS
B
x
OEAB
x
OEBA
x
CLKAB
x
CLKBA
x
SAB
x
SBA
x
OEAB
x
OEBA
x
CLKAB
x
CLKBA
x
SAB
x
SBA
L
L
X
X
X
L
H
H
X
X
L
X
Real-time Transfer
Bus B to A
Real-time Transfer
Bus A to B
BUS
A
BUS
B
BUS
A
BUS
B
x
OEAB
x
OEBA
x
CLKAB
x
CLKBA
x
SAB
x
SBA
x
OEAB
x
OEBA
x
CLKAB
x
CLKBA
x
SAB
x
SBA
X
L
L
H
X
H
↑
X
↑
X
↑
↑
X
X
X
X
X
X
H
L
H or L
H or L
H
H
Storage From
A and/or B
4
Transfer Stored
Data to A and/or B
IDT54/74FCT162652T/AT/CT
FAST CMOS 16-BIT BUS TRANSCEIVER/REGISTER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= –40°C to +85°C, V
CC
= 5.0V ±10%; Military: T
A
= –55°C to +125
°C, V
CC
= 5.0V ±10%
Symbol
V
IH
V
IL
I
IH
Parameter
Input HIGH Level
Input LOW Level
Input HIGH Current (Input pins)
Input HIGH Current (I/O pins)
I
IL
(4)
(4)
(4)
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max.
V
I
= V
CC
Min.
2
—
—
—
Typ.
(2)
—
—
—
—
—
—
—
—
–0.7
–140
100
5
Max.
—
0.8
±1
±1
±1
±1
±1
±1
–1.2
–250
—
500
Unit
V
V
µA
Input LOW Current (Input pins)
Input LOW Current (I/O pins)
V
I
= GND
—
—
(4)
I
OZH
I
OZL
V
IK
I
OS
V
H
I
CCL
I
CCH
I
CCZ
High Impedance Output Current
(3-State Output pins)
(4)
Clamp Diode Voltage
Short Circuit Current
Input Hysteresis
Quiescent Power Supply Current
V
CC
= Max.
V
O
= 2.7V
V
O
= 0.5V
—
—
—
–80
µA
V
CC
= Min., I
IN
= –18mA
V
CC
= Max., V
O
= GND
(3)
—
V
CC
= Max.
V
IN
= GND or V
CC
V
mA
mV
µA
—
—
OUTPUT DRIVE CHARACTERISTICS
Symbol
I
ODL
I
ODH
V
OH
V
OL
Parameter
Output LOW Current
Output HIGH Current
Output HIGH Voltage
Output LOW Voltage
Test Conditions
(1)
V
CC
= 5V, V
IN
= V
IH
or V
IL
, V
O
= 1.5V
(3)
V
CC
= 5V, V
IN
= V
IH
or V
IL
, V
O
= 1.5V
(3)
V
CC
= Min.
V
IN
= V
IH
or V
IL
V
CC
= Min.
V
IN
= V
IH
or V
IL
I
OH
= –16mA MIL
I
OH
= –24mA IND
I
OL
= 16mA MIL
I
OL
= 24mA IND
—
0.3
0.55
V
Min.
60
–60
2.4
Typ.
(2)
115
–115
3.3
Max.
200
–200
—
Unit
mA
mA
V
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 5.0V, +25°C ambient.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
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