3.3V CMOS
16-BIT TRANSPARENT
LATCH
Integrated Device Technology, Inc.
IDT74FCT163373/A/C
FEATURES:
• 0.5 MICRON CMOS Technology
•
Typical t
SK
(o) (Output Skew) < 250ps
• 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 and 15.7 mil pitch TVSOP
• Extended commercial range of -40°C to +85°C
• V
CC
= 3.3V
±0.3V,
Normal Range or
V
CC
= 2.7 to 3.6V, Extended Range
• CMOS power levels (0.4µW typ. static)
• Rail-to-Rail output swing for increased noise margin
• Low Ground Bounce (0.3V typ.)
• Inputs (except I/O) can be driven by 3.3V or 5V
components
DESCRIPTION:
The FCT163373/A/C 16-bit transparent D-type latches are
built using advanced dual metal CMOS technology. These
high-speed, low-power latches are ideal for temporary stor-
age 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 inputs of FCT163373/A/C can be driven from either
3.3V or 5V devices. This feature allows the use of these
transparent latches as translators in a mixed 3.3V/5V supply
system. With xLE inputs HIGH, the FCT163373/A/C can be
used as buffers to connect 5V components to a 3.3V bus.
FUNCTIONAL BLOCK DIAGRAM
1
OE
2
OE
1
LE
1
D
1
2
LE
D
1
O
1
2
D
1
D
2
O
1
C
C
TO 7 OTHER CHANNELS
2601 drw 01
TO 7 OTHER CHANNELS
2601 drw 02
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
©1996
Integrated Device Technology, Inc.
AUGUST 1996
8.4
DSC-2601/6
1
IDT74FCT163373/A/C
3.3V 16-BIT TRANSPARENT LATCH
COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
PIN DESCRIPTION
Pin Names
xDx
Description
Data Inputs
Latch Enable Input (Active HIGH)
Output Enable Input (Active LOW)
3-State Outputs
2601 tbl 01
1
OE
1
O
1
1
O
2
1
2
3
4
5
6
7
8
9
10
11
12 SO48-1
SO48-2
13 SO48-3
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1
LE
1
D
1
1
D
2
xLE
x
OE
xOx
GND
1
O
3
1
O
4
GND
1
D
3
1
D
4
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
TERM(2)
V
TERM(3)
V
TERM(4)
T
STG
I
OUT
Description
Terminal Voltage with
Respect to GND
Terminal Voltage with
Respect to GND
Terminal Voltage with
Respect to GND
Storage Temperature
DC Output Current
Max.
–0.5 to +4.6
–0.5 to +7.0
–0.5 to
V
CC
+ 0.5
–65 to +150
–60 to +60
Unit
V
V
V
V
CC
1
O
5
1
O
6
V
CC
1
D
5
1
D
6
GND
1
O
7
1
O
8
2
O
1
2
O
2
GND
1
D
7
1
D
8
2
D
1
2
D
2
°
C
mA
2601 lnk 03
GND
2
O
3
2
O
4
GND
2
D
3
2
D
4
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 ex-
tended periods may affect reliability.
2. Vcc terminals.
3. Input terminals.
4. Output and I/O terminals.
V
CC
2
O
5
2
O
6
V
CC
2
D
5
2
D
6
CAPACITANCE
(T
A
= +25°C, f = 1.0MHz)
Symbol
Parameter
(1)
C
IN
Input
Capacitance
C
OUT
Output
Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
3.5
3.5
Max. Unit
6.0
pF
8.0
pF
GND
2
O
7
2
O
8
2
OE
GND
2
D
7
2
D
8
2
LE
2601 lnk 04
NOTE:
1. This parameter is measured at characterization but not tested.
FUNCTION TABLE
(1)
SSOP/
TSSOP/TVSOP
TOP VIEW
2601 drw 03
xDx
H
L
X
Inputs
xLE
H
H
X
x
OE
L
L
H
Outputs
xOx
H
L
Z
2601 tbl 02
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
8.4
2
IDT74FCT163373/A/C
3.3V 16-BIT TRANSPARENT LATCH
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
= 2.7V to 3.6V
Symbol
V
IH
V
IL
I
I H
I
I L
I
OZH
I
OZL
V
IK
I
ODH
I
ODL
V
OH
Parameter
Input HIGH Level (Input pins)
Input HIGH Level (I/O pins)
Input LOW Level
(Input and I/O pins)
Input HIGH Current (Input pins)
Input HIGH Current (I/O pins)
Input LOW Current (Input pins)
Input LOW Current (I/O pins)
High Impedance Output Current
(3-State Output pins)
Clamp Diode Voltage
Output HIGH Current
Output LOW Current
Output HIGH Voltage
V
CC
= Max.
V
CC
= Max.
V
I
= 5.5V
V
I
= V
CC
V
I
= GND
V
I
= GND
V
O
= V
CC
V
O
= GND
V
CC
= Min., I
IN
= –18mA
V
CC
= 3.3V, V
IN
= V
IH
or V
IL,
V
O
= 1.5V
(3)
V
CC
= 3.3V, V
IN
= V
IH
or V
IL,
V
O
= 1.5V
(3)
V
CC
= Min.
V
IN
= V
IH
or V
IL
V
CC
= 3.0V
V
IN
= V
IH
or V
IL
V
CC
= Min.
V
IN
= V
IH
or V
IL
I
OH
= –0.1mA
I
OH
= –3mA
I
OH
= –8mA
I
OL
= 0.1mA
I
OL
= 16mA
I
OL
= 24mA
V
CC
= 3.0V
I
OL
= 24mA
V
IN
= V
IH
or V
IL
V
CC
= Max., V
O
= GND
(3)
—
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
Min.
2.0
2.0
–0.5
—
—
—
—
—
—
—
–36
50
V
CC
–
0.2
2.4
2.4
(5)
—
—
—
—
–60
—
—
Typ.
(2)
—
—
—
Max.
5.5
V
CC
+0.5
0.8
±1
±1
±1
±1
±1
±1
–
1.2
Unit
V
V
µA
—
—
—
—
—
—
–
0.7
µA
V
mA
mA
V
–60
90
—
3.0
3.0
—
0.2
0.3
0.3
–
135
–110
200
—
—
—
0.2
0.4
0.55
0.50
–240
—
V
OL
Output LOW Voltage
V
I
OS
V
H
I
CCL
I
CCH
I
CCZ
Short Circuit Current
(4)
Input Hysteresis
Quiescent Power Supply Current
mA
mV
µA
150
0.1
V
CC
= Max.,
V
IN
= GND or V
CC
10
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 = 3.3V, +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. This parameter is guaranteed but not tested.
5. V
OH
= V
CC
–0.6V at rated current.
2601 lnk 05
8.4
3
IDT74FCT163373/A/C
3.3V 16-BIT TRANSPARENT LATCH
COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol
∆I
CC
I
CCD
Parameter
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply
Current
(4)
V
CC
= Max.
V
CC
= Max.
Outputs Open
x
OE
= GND
One Input Toggling
50% Duty Cycle
V
CC
= Max.
Outputs Open
fi =10MHz
50% Duty Cycle
x
OE
= GND
xLE
=
V
CC
One Bit Toggling
V
CC
= Max.
Outputs Open
fi = 2.5MHz
50% Duty Cycle
x
OE
= GND
xLE = V
CC
Sixteen Bits Toggling
V
IN
= V
CC
–0.6V
V
IN
= GND
—
0.5
0.8
Test Conditions
(1)
V
IN
= V
CC
– 0.6V
(3)
V
IN
= V
CC
V
IN
= GND
Min.
—
—
Typ.
(2)
2.0
50
Max.
30
75
Unit
µA
µA/
MHz
I
C
Total Power Supply Current
(6)
V
IN
= V
CC
V
IN
= GND
—
0.5
0.8
mA
V
IN
= V
CC
V
IN
= GND
V
IN
= V
CC
–0.6V
V
IN
= GND
—
2.0
3.0
(5)
—
2.0
3.3
(5)
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
= 3.3V, +25°C ambient.
3. Per TTL driven input; 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 + fiNi)
I
CC
= Quiescent Current (I
CCL,
I
CCH
and I
CCZ
)
∆I
CC
= Power Supply Current for a TTL High Input
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 fi
2601 tbl 06
8.4
4
IDT74FCT163373/A/C
3.3V 16-BIT TRANSPARENT LATCH
COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
(4)
FCT163373
Symbol
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SU
t
H
t
W
t
SK
(o)
Parameter
Propagation Delay
xDx to xOx
Propagation Delay
xLE to xOx
Output Enable Time
Output Disable Time
Set-up Time HIGH
or LOW, xDx to xLE
Hold Time HIGH
or LOW, xDx to xLE
xLE Pulse Width
HIGH
Output Skew
(3)
Condition
(1)
C
L
= 50pF
R
L
= 500Ω
Min
.
(2)
1.5
2.0
1.5
1.5
2.0
1.5
6.0
—
Max.
8.0
13.0
12.0
7.5
—
—
—
0.5
FCT163373A
Min.
(2)
1.5
2.0
1.5
1.5
2.0
1.5
5.0
—
Max.
5.2
8.5
6.5
5.5
—
—
—
0.5
FCT163373C
Min
.
(2)
1.5
2.0
1.5
1.5
2.0
1.5
5.0
—
Max
.
4.2
5.5
5.5
5.0
—
—
—
0.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
2601 tbl 07
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. Propagation Delays and Enable/Disable times are with V
CC
= 3.3V
±0.3V,
Normal Range. For V
CC
= 2.7V to 3.6V, Extended Range, all Propagation Delays
and Enable/Disable times should be degraded by 20%.
8.4
5
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