MILITARY AND COMMERCIAL TEMPERATURE RANGES
AUGUST 1996
1996 Integrated Device Technology, Inc.
5.7
DSC-4229/9
1
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
Integrated Device Technology, Inc.
DESCRIPTION:
The FCT16373T/AT/CT/ET and FCT162373T/AT/CT/ET
16-bit transparent D-type latches are built using advanced
dual metal CMOS technology. These high-speed, low-power
latches are ideal for temporary storage of data. They can be
used for implementing memory address latches, I/O ports,
and bus drivers. The Output Enable and Latch Enable controls
are organized to operate each device as two 8-bit latches, or
one 16-bit latch. Flow-through organization of signal pins
simplifies layout. All inputs are designed with hysteresis for
improved noise margin.
The FCT16373T/AT/CT/ET are ideally suited for driving
high-capacitance loads and low-impedance backplanes. The
output buffers are designed with power off disable capability
to allow "live insertion" of boards when used as backplane
drivers.
The FCT162373T/AT/CT/ET have balanced output drive
with current limiting resistors. This offers low ground bounce,
minimal undershoot, and controlled output fall times reduc-
ing the need for external series terminating resistors. The
FCT162373T/AT/CT/ET are plug-in replacements for the
FCT16373T/AT/CT/ET and ABT16373 for on-board interface
applications.
FAST CMOS 16-BIT
TRANSPARENT
LATCHES
IDT54/74FCT16373T/AT/CT/ET
IDT54/74FCT162373T/AT/CT/ET
FUNCTIONAL BLOCK DIAGRAM
1
OE
1
LE
1
O
1
1
D
1
2543 drw 01
TO 7 OTHER CHANNELS
C
D
2
O
1
2
OE
2
LE
2
D
1
2543 drw 02
TO 7 OTHER CHANNELS
C
D
FEATURES:
Common features:
0.5 MICRON CMOS Technology
High-speed, low-power CMOS replacement for
ABT functions
Typical t
SK
(o) (Output Skew) < 250ps
Low input and output leakage
1
A (max.)
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
Packages include 25 mil pitch SSOP, 19.6 mil pitch
TSSOP,15.7 mil pitch TVSOP and 25 mil pitch Cerpack
Extended commercial range of -40
C to +85
C
V
CC
= 5V
10%
Features for FCT16373T/AT/CT/ET:
High drive outputs (-32mA I
OH
, 64mA I
OL
)
Power off disable outputs permit "live insertion"
Typical V
OLP
(Output Ground Bounce) < 1.0V at
V
CC
= 5V, T
A
= 25
C
Features for FCT162373T/AT/CT/ET:
Balanced Output Drivers:
24mA (commercial),
16mA (military)
Reduced system switching noise
Typical V
OLP
(Output Ground Bounce) < 0.6V at
V
CC
= 5V,T
A
= 25
C
5.7
2
IDT54/74FCT16373T/AT/CT/ET, 162373T/AT/CT/ET
FAST CMOS 16-BIT TRANSPARENT LATCHES
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
1
O
1
GND
1
O
3
V
CC
1
OE
GND
2
O
2
GND
V
CC
GND
1
O
2
1
O
4
1
O
5
1
O
6
1
O
7
1
O
8
2
O
1
2
O
3
2
O
4
2
O
5
2
O
7
2
O
8
2
O
6
2
OE
1
LE
1
D
1
1
D
2
GND
1
D
3
1
D
4
V
CC
1
D
5
1
D
6
1
D
7
1
D
8
2
D
1
2
D
2
2
D
3
2
D
4
V
CC
2
D
5
2
D
7
2
D
8
2
D
6
2
LE
GND
GND
GND
39
29
30
31
32
33
34
35
36
37
38
25
26
27
28
48
47
41
42
43
44
45
46
40
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
11
21
22
23
24
2543 drw 04
CERPACK
TOP VIEW
E48-1
1
O
1
GND
1
O
3
V
CC
1
OE
GND
2
O
2
GND
V
CC
GND
1
O
2
1
O
4
1
O
5
1
O
6
1
O
7
1
O
8
2
O
1
2
O
3
2
O
4
2
O
5
2
O
7
2
O
8
2
O
6
2
OE
1
LE
1
D
1
1
D
2
GND
1
D
3
1
D
4
V
CC
1
D
5
1
D
6
1
D
7
1
D
8
2
D
1
2
D
2
2
D
3
2
D
4
V
CC
2
D
5
2
D
7
2
D
8
2
D
6
2
LE
GND
GND
GND
2543 drw 03
39
29
30
31
32
33
34
35
36
37
38
25
26
27
28
48
47
41
42
43
44
45
46
40
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
11
21
22
23
24
SSOP/
TSSOP/TVSOP
TOP VIEW
SO48-1
SO48-2
SO48-3
IDT54/74FCT16373T/AT/CT/ET, 162373T/AT/CT/ET
FAST CMOS 16-BIT TRANSPARENT LATCHES
MILITARY AND COMMERCIAL TEMPERATURE RANGES
5.7
3
NOTE:
2543 tbl 02
1. H = HIGH voltage level
L = LOW voltage level
X = Don't care
Z = High-impedance
PIN DESCRIPTION
2543 tbl 01
ABSOLUTE MAXIMUM RATINGS
(1)
FUNCTION TABLE
(1)
CAPACITANCE
(T
A
= +25
C, f = 1.0MHz)
NOTE:
1. This parameter is measured at characterization but not tested.
2543 lnk 04
Symbol
Parameter
(1)
Conditions
Typ.
Max.
Unit
C
IN
Input
Capacitance
V
IN
= 0V
3.5
6.0
pF
C
OUT
Output
Capacitance
V
OUT
= 0V
3.5
8.0
pF
Pin Names
Description
xDx
Data Inputs
xLE
Latch Enable Input (Active HIGH)
x
OE
Output Enable Input (Active LOW)
xOx
3-State Outputs
Inputs
Outputs
xDx
xLE
x
OE
OE
xOx
H
H
L
H
L
H
L
L
X
X
H
Z
Symbol
Description
Max.
Unit
V
TERM(2)
Terminal Voltage with Respect to
GND
0.5 to +7.0
V
V
TERM(3)
Terminal Voltage with Respect to
GND
0.5 to
V
CC
+0.5
V
T
STG
Storage Temperature
65 to +150
C
I
OUT
DC Output Current
60 to +120 mA
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.
2543 lnk 03
5.7
4
IDT54/74FCT16373T/AT/CT/ET, 162373T/AT/CT/ET
FAST CMOS 16-BIT TRANSPARENT LATCHES
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: 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
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
V
IH
Input HIGH Level
Guaranteed Logic HIGH Level
2.0
--
--
V
V
IL
Input LOW Level
Guaranteed Logic LOW Level
--
--
0.8
V
I
I H
Input HIGH Current (Input pins)
(5)
V
CC
= Max.
V
I
= V
CC
--
--
1
A
Input HIGH Current (I/O pins)
(5)
--
--
1
I
I L
Input LOW Current (Input pins)
(5)
V
I
= GND
--
--
1
Input LOW Current (I/O pins)
(5)
--
--
1
I
OZH
High Impedance Output Current
V
CC
= Max.
V
O
= 2.7V
--
--
1
A
I
OZL
(3-State Output pins)
(5)
V
O
= 0.5V
--
--
1
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
--
0.7
1.2
V
I
OS
Short Circuit Current
V
CC
= Max., V
O
= GND
(3)
80
140
225
mA
V
H
Input Hysteresis
--
--
100
--
mV
I
CCL
I
CCH
I
CCZ
Quiescent Power Supply Current
V
CC
= Max., V
IN
= GND or V
CC
--
5
500
A
2543 lnk 05
2543 lnk 07
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25
C ambient.
3. Not more than one output should be tested at one time. Duration of the test should not exceed one second.
4. Duration of the condition can not exceed one second.
5. The test limit for this parameter is
5
A at T
A
= 55
C.
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
I
ODL
Output LOW Current
V
CC
= 5V, V
IN
= V
IH
or
V
IL,
V
OUT
= 1.5V
(3)
60
115
200
mA
I
ODH
Output HIGH Current
V
CC
= 5V, V
IN
= V
IH
or V
IL,
V
OUT
= 1.5V
(3)
60
115
200
mA
V
OH
Output HIGH Voltage
V
CC
= Min.
V
IN
= V
IH
or V
IL
I
OH
= 16mA MIL.
I
OH
= 24mA COM'L.
2.4
3.3
--
V
V
OL
Output LOW Voltage
V
CC
= Min.
V
IN
= V
IH
or V
IL
I
OL
= 16mA MIL.
I
OL
= 24mA COM'L.
--
0.3
0.55
V
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
I
O
Output Drive Current
V
CC
= Max., V
O
= 2.5V
(3)
50
--
180
mA
V
OH
Output HIGH Voltage
V
CC
= Min.
I
OH
= 3mA
2.5
3.5
--
V
V
IN
= V
IH
or V
IL
I
OH
= 12mA MIL.
I
OH
= 15mA COM'L.
2.4
3.5
--
V
I
OH
= 24mA MIL.
I
OH
= 32mA COM'L.
(4)
2.0
3.0
--
V
V
OL
Output LOW Voltage
V
CC
= Min.
V
IN
= V
IH
or V
IL
I
OL
= 48mA MIL.
I
OL
= 64mA COM'L.
--
0.2
0.55
V
I
OFF
Input/Output Power Off Leakage
(5)
V
CC
= 0V, V
IN
or V
O
4.5V
--
--
1
A
OUTPUT DRIVE CHARACTERISTICS FOR FCT16373T
2543 lnk 06
OUTPUT DRIVE CHARACTERISTICS FOR FCT162373T
IDT54/74FCT16373T/AT/CT/ET, 162373T/AT/CT/ET
FAST CMOS 16-BIT TRANSPARENT LATCHES
MILITARY AND COMMERCIAL TEMPERATURE RANGES
5.7
5
POWER SUPPLY CHARACTERISTICS
2543 tbl 08
NOTES:
1. For conditions shown as Max. or Min., 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. Per TTL driven input (V
IN
= 3.4V). All other inputs at V
CC
or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the I
CC
formula. These limits are guaranteed but not tested.
6. I
C
= I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
= I
CC
+
I
CC
D
H
N
T
+ I
CCD
(f
CP
N
CP
/2 + f
i
N
i
)
I
CC
= Quiescent Current (I
CCL
,
I
CCH
and I
CCZ
)
I
CC
= Power Supply Current for a TTL High Input (V
IN
= 3.4V)
D
H
= Duty Cycle for TTL Inputs High
N
T
= Number of TTL Inputs at D
H
I
CCD
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
N
CP
= Number of Clock Inputs at f
CP
f
i
= Input Frequency
N
i
= Number of Inputs at f
i
Symbol
Parameter
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Unit
I
CC
Quiescent Power Supply Current
TTL Inputs HIGH
V
CC
= Max.
V
IN
= 3.4V
(3)
--
0.5
1.5
mA
I
CCD
Dynamic Power Supply
Current
(4)
V
CC
= Max.
Outputs Open
x
OE
= GND
One Input Toggling
50% Duty Cycle
V
IN
= V
CC
V
IN
= GND
--
60
100
A/
MHz
I
C
Total Power Supply Current
(6)
V
CC
= Max.
Outputs Open
fi =10MHz
V
IN
= V
CC
V
IN
= GND
--
0.6
1.5
mA
50% Duty Cycle
x
OE
= GND
xLE
=
V
CC
One Bit Toggling
V
IN
= 3.4V
V
IN
= GND
--
0.9
2.3
V
CC
= Max.
Outputs Open
fi = 2.5MHz
V
IN
= V
CC
V
IN
= GND
--
2.4
4.5
(5)
50% Duty Cycle
x
OE
= GND
xLE = V
CC
Sixteen Bits Toggling
V
IN
= 3.4V
V
IN
= GND
--
6.4
16.5
(5)
5.7
6
IDT54/74FCT16373T/AT/CT/ET, 162373T/AT/CT/ET
FAST CMOS 16-BIT TRANSPARENT LATCHES
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
FCT16373T/162373T
FCT16373AT/162373AT
Com'l.
Mil.
Com'l.
Mil.
Symbol
Parameter
Condition
(1)
Min.
(2)
Max.
Min.
(2)
Max.
Min.
(2)
Max.
Min.
(2)
Max.
Unit
t
PLH
t
PHL
Propagation Delay
xDx to xOx
C
L
= 50pF
R
L
= 500
1.5
8.0
1.5
8.5
1.5
5.2
1.5
5.6
ns
t
PLH
t
PHL
Propagation Delay
xLE to xOx
2.0
13.0
2.0
15.0
2.0
8.5
2.0
9.8
ns
t
PZH
t
PZL
Output Enable Time
1.5
12.0
1.5
13.5
1.5
6.5
1.5
7.5
ns
t
PHZ
t
PLZ
Output Disable Time
1.5
7.5
1.5
10.0
1.5
5.5
1.5
6.5
ns
t
SU
Set-up Time HIGH or LOW,
xDx to xLE
2.0
--
2.0
--
2.0
--
2.0
--
ns
t
H
Hold Time HIGH or LOW,
xDx to xLE
1.5
--
1.5
--
1.5
--
1.5
--
ns
t
W
xLE Pulse Width HIGH
6.0
--
6.0
--
5.0
--
6.0
--
ns
t
SK
(o) Output Skew
(3)
--
0.5
--
0.5
--
0.5
--
0.5
ns
2543 tbl 09
FCT16373CT/162373CT
FCT16373ET/162373ET
Com'l.
Mil.
Com'l.
Mil.
Symbol
Parameter
Condition
(1)
Min.
(2)
Max.
Min.
(2)
Max.
Min.
(2)
Max.
Min.
(2)
Max.
Unit
t
PLH
t
PHL
Propagation Delay
xDx to xOx
C
L
= 50pF
R
L
= 500
1.5
4.2
1.5
5.1
1.5
3.4
--
--
ns
t
PLH
t
PHL
Propagation Delay
xLE to xOx
2.0
5.5
2.0
8.0
1.5
3.7
--
--
ns
t
PZH
t
PZL
Output Enable Time
1.5
5.5
1.5
6.3
1.5
4.4
--
--
ns
t
PHZ
t
PLZ
Output Disable Time
1.5
5.0
1.5
5.9
1.5
3.6
--
--
ns
t
SU
Set-up Time HIGH or LOW,
xDx to xLE
2.0
--
2.0
--
1.0
--
--
--
ns
t
H
Hold Time HIGH or LOW,
xDx to xLE
1.5
--
1.5
--
1.0
--
--
--
ns
t
W
xLE Pulse Width HIGH
5.0
--
6.0
--
3.0
(4)
--
--
--
ns
t
SK
(o) Output Skew
(3)
--
0.5
--
0.5
--
0.5
--
--
ns
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
4. This limit is guaranteed but not tested.
IDT54/74FCT16373T/AT/CT/ET, 162373T/AT/CT/ET
FAST CMOS 16-BIT TRANSPARENT LATCHES
MILITARY AND COMMERCIAL TEMPERATURE RANGES
5.7
7
TEST CIRCUITS AND WAVEFORMS
TEST CIRCUITS FOR ALL OUTPUTS
ENABLE AND DISABLE TIMES
PROPAGATION DELAY
SET-UP, HOLD AND RELEASE TIMES
PULSE WIDTH
SWITCH POSITION
Pulse
Generator
R
T
D.U.T.
V
CC
V
IN
C
L
V
OUT
50pF
500
500
7.0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
DATA
INPUT
TIMING
INPUT
ASYNCHRONOUS CONTROL
PRESET
CLEAR
ETC.
SYNCHRONOUS CONTROL
t
SU
t
H
t
REM
t
SU
t
H
HIGH-LOW-HIGH
PULSE
LOW-HIGH-LOW
PULSE
t
W
1.5V
1.5V
SAME PHASE
INPUT TRANSITION
3V
1.5V
0V
1.5V
V
OH
t
PLH
OUTPUT
OPPOSITE PHASE
INPUT TRANSITION
3V
1.5V
0V
t
PLH
t
PHL
t
PHL
V
OL
CONTROL
INPUT
3V
1.5V
0V
3.5V
0V
OUTPUT
NORMALLY
LOW
OUTPUT
NORMALLY
HIGH
SWITCH
CLOSED
SWITCH
OPEN
V
OL
0.3V
0.3V
t
PLZ
t
PZL
t
PZH
t
PHZ
3.5V
0V
1.5V
1.5V
ENABLE
DISABLE
V
OH
PRESET
CLEAR
CLOCK ENABLE
ETC.
Test
Switch
Disable Low
Enable Low
Closed
All Other Tests
Open
Open Drain
DEFINITIONS:
C
L
=
Load capacitance: includes jig and probe capacitance.
R
T
=
Termination resistance: should be equal to Z
OUT
of the Pulse
Generator.
2543 lnk 10
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control Disable-
HIGH
2. Pulse Generator for All Pulses: Rate
1.0MHz; t
F
2.5ns; t
R
2.5ns
2543 drw 09
2543 drw 07
2543 drw 05
2543 drw 06
2543 drw 08
5.7
8
IDT54/74FCT16373T/AT/CT/ET, 162373T/AT/CT/ET
FAST CMOS 16-BIT TRANSPARENT LATCHES
MILITARY AND COMMERCIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT XX
Temp. Range
XXXX
Device Type
X
Package
X
Process
54
74
55
C to +125
C
40
C to +85
C
Blank
B
PV
PA
PF
E
16373T
16373AT
16373CT
16373ET
162373T
162373AT
162373CT
162373ET
Commercial
MIL-STD-883, Class B
Shrink Small Outline Package (SO48-1)
Thin Shrink Small Outline Package (SO48-2)
Thin Very Small Outline Package (SO48-3)
CERPACK (E48-1)
Non-Inverting 16-Bit Transparent Latch
FCT
2543 drw 10
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