®
74VCX16373
LOW VOLTAGE 16-BIT D-TYPE LATCH (3-STATE)
WITH 3.6V TOLERANT INPUTS AND OUTPUTS
s
s
s
s
s
s
s
s
3.6V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED:
t
PD
= 3.0 ns (MAX.) at V
CC
= 3.0 to 3.6V
t
PD
= 3.4 ns (MAX.) at V
CC
= 2.3 to 2.7V
t
PD
= 6.8 ns (MAX.) at V
CC
= 1.8V
POWER-DOWN PROTECTION ON INPUTS
AND OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24 mA (MIN) at V
CC
= 3.0V
|I
OH
| = I
OL
= 18 mA (MIN) at V
CC
= 2.3V
|I
OH
| = I
OL
= 6 mA (MIN) at V
CC
= 1.8V
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 1.8V to 3.6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16373
LATCH-UP PERFORMANCE EXCEEDS 300mA
ESD PERFORMANCE:
HBM >2000V; MM > 200V
T
(TSSOP48 Package)
ORDER CODES :
74VCX16373T
PIN CONNECTION
DESCRIPTION
The VCX16373 is a low voltage CMOS 16-BIT
D-TYPE LATCH with 3 STATE OUTPUTS NON
INVERTING fabricated with sub-micron silicon
gate and five-layer metal wiring C
2
MOS
technology. It is ideal for low power and very high
speed 1.8 to 3.6V applications; it can be
interfaced to 3.6V signal enviroment for both
inputs and outputs.
These 16 bit D-Type latchs are byte controlled by
two latch enable inputs (nLE) and two output
enable inputs (OE).
While the nLE input is held at a high level, the nQ
outputs will follow the data input precisely.
When the nLE is taken low, the nQ outputs will be
latched precisely at the logic level of D input data.
While the (nOE) input is low, the nQ outputs will
be in a normal logic state (high or low logic level)
and while high level the outputs will be in a high
impedance state.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
December 1999
1/11
74VCX16373
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1
2, 3, 5, 6,
8, 9, 11, 12
13, 14, 16, 17,
19, 20, 22, 23
24
25
36, 35, 33, 32,
30, 29, 27, 26
47, 46, 44, 43,
41, 40, 38, 37
48
4, 10, 15, 21,
28, 34, 39, 45
7, 18, 31, 42
SYMBOL
1OE
1Q0 to 1Q7
2Q0 to 2Q7
2OE
2LE
2D0 to 2D7
1D0 to 1D7
1LE
GND
V
CC
NAME AND FUNCT ION
3 State Output Enable
Input (Active LOW)
3 State Outputs
3 State Outputs
3 State Output Enable
Input (Active LOW)
Latch Enable Input
Data Inputs
Data Inputs
Latch Enable Input
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOLS
TRUTH TABLE
INPUT S
OE
H
L
L
L
LE
X
L
H
H
D
X
X
L
H
OUTPUTS
Q
Z
NO CHANGE *
L
H
X:Don’t care
Z: High impedance
* Q output are latched at the timewhen the LE input is taken low level.
2/11
74VCX16373
LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
V
O
I
IK
I
OK
I
O
I
CC
orI
GND
P
D
T
stg
T
L
Supply Voltage
DC Input Voltage
DC Output Voltage (OFF state)
DC Output Voltage (High or Low State) (note1)
DC Input Diode Current
DC Output Diode Current (note2)
DC Output Source/Sink Current
DC V
CC
or Ground Current Per Supply Pin
Power Dissipation
Storage Temperature
Lead Temperature (10 sec)
Parameter
Value
-0.5 to + 4.6
-0.5 to + 4.6
-0.5 to + 4.6
-0.5 to V
CC
+ 0.5
- 50
±
50
±
50
±
100
400
-65 to +150
300
Unit
V
V
V
V
mA
mA
mA
mA
mW
o
o
C
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
1) I
O
absolute maximum rating must be observed
2) V
O
< GND, V
O
> V
CC
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
V
O
I
OH
, I
OL
I
OH
, I
OL
I
OH
, I
OL
T
op
dt/dv
Supply Voltage
Input Voltage
Output Voltage (OFF state)
Output Voltage (High or Low State)
High or Low Level Output Current (V
CC
= 3.0 to 3.6V)
High or Low Level Output Current (V
CC
= 2.3 to 2.7V)
High or Low Level Output Current (V
CC
= 1.8V)
Operating Temperature:
Input Transition Rise or Fall Rate (V
CC
= 3.0V) (note 1)
Parameter
Value
1.8 to 3.6
-0.3 to 3.6
0 to 3.6
0 to V
CC
±
24
±
18
±
6
-40 to+85
0 to 10
Unit
V
V
V
V
mA
mA
mA
o
C
ns/V
1) V
IN
from0.8V to 2.0V, V
CC
= 3.0V
3/11
74VCX16373
DC SPECIFICATIONS
(2.7V < V
CC
≤
3.6V unless otherwise specified)
Symb ol
Parameter
V
CC
(V)
V
IH
V
IL
V
OH
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
2.7 to 3.6
2.7 to 3.6
2.7
3.0
3.0
V
OL
Low Level Output Voltage
2.7 to 3.6
2.7
3.0
3.0
I
I
I
OZ
I
off
I
CC
∆I
CC
Input Leakage Current
3 State Output Leakage Current
Power Off Leakage Current
Quiescent Supply Current
ICC incr. per input
2.7 to 3.6
2.7 to 3.6
0
2.7 to 3.6
2.7 to 3.6
V
I
= V
IH
or V
IL
V
I
= V
IH
or V
IL
I
O
=-100
µ
A
I
O
=-12 mA
I
O
=-18 mA
I
O
=-24 mA
I
O
=100
µA
I
O
=12 mA
I
O
=18 mA
I
O
=24 mA
V
I
= 0 to 3.6 V
V
I
= V
IH
orV
IL
V
O
= 0 to 3.6V
V
I
orV
O
= 0 to 3.6V
V
I
= V
CC
orGND
V
I
orV
O
= V
CC
to 3.6 V
V
IH
= V
CC
-0.6V
Test Co nditi ons
Value
-40 to 85 C
Min.
2.0
0.8
V
CC
-0.2
2.2
2.4
2.2
0.2
0.4
0.4
0.55
±5
±10
10
20
±
20
750
µA
µA
µ
A
µA
µA
V
V
Max.
V
V
o
Un it
DC SPECIFICATIONS
(2.3V < V
CC
≤
2.7V unless otherwise specified)
Symb ol
Parameter
V
CC
(V)
V
IH
V
IL
V
OH
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
2.3 to 2.7
2.3 to 2.7
2.3
2.3
2.3
V
OL
Low Level Output Voltage
2.3 to 2.7
2.3
2.3
I
I
I
OZ
I
off
I
CC
Input Leakage Current
3 State Output Leakage Current
Power Off Leakage Current
Quiescent Supply Current
2.3 to 2.7
2.3 to 2.7
0
2.3 to 2.7
V
I
= V
IH
or V
IL
V
I
= V
IH
or V
IL
I
O
=-100
µA
I
O
=-6 mA
I
O
=-12 mA
I
O
=-18 mA
I
O
=100
µ
A
I
O
=12 mA
I
O
=18 mA
V
I
= 0 to 3.6 V
V
I
= V
IH
orV
IL
V
O
= 0 to 3.6V
V
I
orV
O
= 0 to 3.6V
V
I
= V
CC
orGND
V
I
orV
O
= V
CC
to 3.6 V
Test Co nditi ons
Value
-40 to 85 C
Min.
1.6
0.7
V
CC
-0.2
2.0
1.8
1.7
0.2
0.4
0.6
±
5
±
10
10
20
±
20
µ
A
µ
A
µA
µ
A
V
V
Max.
V
V
o
Un it
4/11
74VCX16373
DC SPECIFICATIONS
(1.8V
≤
V
CC
≤
2.3V unless otherwise specified)
Symb ol
Parameter
V
CC
(V)
V
IH
V
IL
V
OH
V
OL
I
I
I
OZ
I
off
I
CC
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
Low Level Output Voltage
Input Leakage Current
3 State Output Leakage Current
Power Off Leakage Current
Quiescent Supply Current
1.8 to 2.3
1.8
1.8
1.8
1.8
1.8
1.8
0
1.8
V
I
= V
IH
or V
IL
V
I
= V
IH
or V
IL
I
O
=-100
µ
A
I
O
=-6 mA
I
O
=100
µ
A
I
O
=6 mA
Test Co nditi ons
Value
-40 to 85 C
Min.
0.7V
CC
0.2V
CC
V
CC
-0.2
1.4
0.2
0.3
±5
±
10
10
20
±20
Max.
V
V
V
V
µA
µ
A
µ
A
µA
o
Un it
V
I
= 0 to 3.6 V
V
I
= V
IH
orV
IL
V
O
= 0 to 3.6V
V
I
orV
O
= 0 to 3.6V
V
I
= V
CC
orGND
V
I
orV
O
= V
CC
to 3.6 V
DYNAMIC SWITCHING CHARACTERISTICS
(T
a
= 25
o
C, Input t
r
= t
f
= 2.0ns, C
L
= 30pF, R
L
= 500Ω)
Symb ol
Parameter
V
CC
(V)
V
OLP
Dynamic Low Voltage Quiet Output
(note 1, 3)
Dynamic Low Voltage Quiet Output
(note 1, 3)
Dynamic High Voltage Quiet Output
(note 2, 3)
1.8
2.5
3.3
V
OLV
1.8
2.5
3.3
V
OHV
1.8
2.5
3.3
V
IL
= 0 V
V
IH
= V
CC
V
IL
= 0 V
V
IH
= V
CC
V
IL
= 0 V
V
IH
= V
CC
Test Con dition s
Min .
Value
T
A
= 25 C
T yp.
0.25
0.6
0.8
-0.25
-0.6
-0.8
1.5
1.9
2.2
V
V
V
Max.
o
Un it
1) Number ofoutputs defined as ”n”. Measured with”n-1” outputs switching from HIGH to LOW or LOW t o HIGH. The remaining output is measured in
the LOW state.
2) Number ofoutputs defined as ”n”. Measured with”n-1” outputs switching from HIGH to LOW or LOW t o HIGH. The remaining output is measured in
the HIGH state.
3) Parameters guaranteed by design.
5/11
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