74LVQ373
LOW VOLTAGE CMOS OCTAL D-TYPE LATCH
WITH 3 STATE OUTPUTS NON INVERTING
s
s
s
s
s
s
s
s
s
s
s
HIGH SPEED:
t
PD
= 5.8 ns (TYP.) at V
CC
= 3.3 V
COMPATIBLE WITH TTL OUTPUTS
LOW POWER DISSIPATION:
I
CC
= 4
µA
(MAX.) at T
A
=25°C
LOW NOISE:
V
OLP
= 0.4V (TYP.) at V
CC
= 3.3V
75Ω TRANSMISSION LINE OUTPUT DRIVE
CAPABILITY
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 12mA (MIN) at V
CC
= 3.0 V
PCI BUS LEVELS GUARANTEED AT 24 mA
BALANCED PROPAGATION DELAYS:
t
PLH
≅
t
PHL
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 3.6V (1.2V Data Retention)
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 373
IMPROVED LATCH-UP IMMUNITY
SOP
TSSOP
Table 1: Order Codes
PACKAGE
SOP
TSSOP
T&R
74LVQ373MTR
74LVQ373TTR
DESCRIPTION
The 74LVQ373 is a low voltage CMOS OCTAL
D-TYPE LATCH with 3 STATE OUTPUT NON
INVERTING fabricated with sub-micron silicon
gate and double-layer metal wiring C
2
MOS
technology. It is ideal for low power and low noise
3.3V applications.
These 8 bit D-Type latch are controlled by a latch
Figure 1: Pin Connection And IEC Logic Symbols
enable input (LE) and an output enable input (OE).
While the LE inputs is held at a high level, the Q
outputs will follow the data input precisely.
When the LE is taken low, the Q outputs will be
latched precisely at the logic level of D input data.
While the (OE) input is low, the 8 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.
July 2004
Rev. 5
1/13
74LVQ373
Table 4: Absolute Maximum Ratings
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
T
stg
T
L
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
Storage Temperature
Lead Temperature (10 sec)
Parameter
Value
-0.5 to +7
-0.5 to V
CC
+ 0.5
-0.5 to V
CC
+ 0.5
±
20
±
20
±
50
±
400
-65 to +150
300
Unit
V
V
V
mA
mA
mA
mA
°C
°C
I
CC
or I
GND
DC V
CC
or Ground Current
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
Table 5: Recommended Operating Conditions
Symbol
V
CC
V
I
V
O
T
op
dt/dv
Supply Voltage (note 1)
Input Voltage
Output Voltage
Operating Temperature
Input Rise and Fall Time V
CC
= 3.0V (note 2)
Parameter
Value
2 to 3.6
0 to V
CC
0 to V
CC
-55 to 125
0 to 10
Unit
V
V
V
°C
ns/V
1) Truth Table guaranteed: 1.2V to 3.6V
2) V
IN
from 0.8V to 2V
3/13
74LVQ373
Table 6: DC Specifications
Test Condition
Symbol
Parameter
V
CC
(V)
T
A
= 25°C
Min.
2.0
0.8
I
O
=-50
µA
3.0
I
O
=-12 mA
I
O
=-24 mA
V
OL
Low Level Output
Voltage
I
O
=50
µA
3.0
I
O
=12 mA
I
O
=24 mA
I
I
I
OZ
Input Leakage
Current
High Impedance
Output Leakage
Current
Quiescent Supply
Current
Dynamic Output
Current (note 1, 2)
3.6
3.6
3.6
3.6
V
I
= V
CC
or GND
V
I
= V
IH
or V
IL
V
O
= V
CC
or GND
V
I
= V
CC
or GND
V
OLD
= 0.8 V max
V
OHD
= 2 V min
±
0.1
±0.25
4
36
-25
0.002
0
0.1
0.36
2.9
2.58
2.99
2.9
2.48
2.2
0.1
0.44
0.55
±
1
±2.5
40
25
-25
Typ.
Max.
Value
-40 to 85°C
Min.
2.0
0.8
2.9
2.48
2.2
0.1
0.44
0.55
±
1
±5.0
40
µA
µA
µA
mA
mA
V
V
Max.
-55 to 125°C
Min.
2.0
0.8
Max.
V
V
Unit
V
IH
V
IL
V
OH
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
3.0 to
3.6
I
CC
I
OLD
I
OHD
1) Maximum test duration 2ms, one output loaded at time
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 75Ω
Table 7: Dynamic Switching Characteristics
Test Condition
Symbol
Parameter
V
CC
(V)
3.3
3.3
C
L
= 50 pF
3.3
0.8
V
T
A
= 25°C
Min.
Typ.
0.4
-0.8
2
-0.5
Max.
0.8
V
V
Value
-40 to 85°C
Min.
Max.
-55 to 125°C
Min.
Max.
Unit
V
OLP
V
OLV
V
IHD
V
ILD
Dynamic Low
Voltage Quiet
Output (note 1, 2)
Dynamic High
Voltage Input
(note 1, 3)
Dynamic Low
Voltage Input
(note 1, 3)
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (V
ILD
), 0V to threshold
(V
IHD
), f=1MHz.
4/13
74LVQ373
Table 8: AC Electrical Characteristics
(C
L
= 50 pF, R
L
= 500
Ω,
Input t
r
= t
f
= 3ns)
Test Condition
Symbol
Parameter
V
CC
(V)
2.7
3.3
(*)
2.7
3.3
(*)
2.7
3.3
(*)
2.7
3.3
(*)
2.7
3.3
(*)
2.7
3.3
(*)
2.7
3.3
(*)
2.7
3.3
(*)
T
A
= 25°C
Min.
Typ.
7.2
5.8
7.2
5.8
8.7
7.4
8.5
7.5
2.0
1.5
0.0
0.0
0.0
0.0
0.5
0.5
Max.
11.5
9.0
11.5
9.0
14.0
11.5
14.0
11.5
5.0
4.0
4.0
3.0
1.5
1.5
1.0
1.0
Value
-40 to 85°C
Min.
Max.
13.5
10.5
13.5
10.5
16.0
13.5
16.0
13.5
6.0
4.0
4.5
3.0
1.5
1.5
1.0
1.0
-55 to 125°C
Min.
Max.
15.5
12.0
15.5
12.0
18.5
15.5
18.5
15.5
6.0
4.0
4.5
3.0
1.5
1.5
1.0
1.0
ns
ns
ns
ns
ns
ns
ns
Unit
t
PLH
t
PHL
t
PLH
t
PHL
t
PLZ
t
PHZ
t
PZL
t
PZH
t
W
t
sL
t
sH
t
hL
t
hH
t
OSLH
t
OSHL
Propagation Delay
Time LE to Q
Propagation Delay
Time D to Q
Output Disable
Time
Output Enable
Time
LE Pulse Width
HIGH
Setup Time D to
LE, HIGH or LOW
Hold Time D to LE,
HIGH or LOW
Output To Output
Skew Time
(note1, 2)
ns
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-
ing in the same direction, either HIGH or LOW (t
OSLH
= |t
PLHm
- t
PLHn
|, t
OSHL
= |t
PHLm
- t
PHLn
|)
2) Parameter guaranteed by design
(*) Voltage range is 3.3V
±
0.3V
Table 9: Capacitive Characteristics
Test Condition
Symbol
Parameter
V
CC
(V)
3.3
3.3
3.3
f
IN
= 10MHz
T
A
= 25°C
Min.
Typ.
4
8
10
Max.
Value
-40 to 85°C
Min.
Max.
-55 to 125°C
Min.
Max.
pF
pF
pF
Unit
C
IN
C
OUT
C
PD
Input Capacitance
Output
Capacitance
Power Dissipation
Capacitance
(note 1)
1) C
PD
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
/8 (per Latch)
5/13
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