INTEGRATED CIRCUITS
74LVC2373A
74LVCH2373A
Octal D-type transparent latch with 5-volt
tolerant inputs/outputs; damping resistor
(3-State)
Product specification
IC24 Data Handbook
1997 Mar 12
Philips
Semiconductors
Philips Semiconductors
Product specification
Octal D-type transparent latch with 5-volt tolerant
inputs/outputs; damping resistor (3-State)
74LVC2373A
74LVCH2373A
FEATURES
•
5-volt tolerant inputs/outputs, for interfacing with 5-volt logic
•
Supply voltage range of 2.7V to 3.6V
•
Complies with JEDEC standard no. 8-1A
•
CMOS low power consumption
•
Direct interface with TTL levels
•
High impedance when V
CC
= 0V
•
Bushold on all data inputs (74LVCH2373A only)
•
Integrated 30W damping resistor
DESCRIPTION
The 74LVC2373A/74LVCH2373A is a high performance, low-power,
low-voltage Si-gate CMOS device and superior to most advanced
CMOS compatible TTL families. Inputs can be driven from either
3.3V or 5V devices. This feature allows the use of these devices as
translators in a mixed 3.3V/5V environment.
The 74LVC2373A/74LVCH2373A is an octal D-type transparent
latch featuring separate D-type inputs for each latch and 3-State
outputs for bus oriented applications. A latch enable (LE) input and
an output enable (OE) input are common to all internal latches.
The ‘2373’ consists of eight D-type transparent latches with 3-State
true outputs. When LE is HIGH, data at the Dn inputs enters the
latches. In this condition the latches are transparent, i.e., a latch
output will change each time its corresponding D-input changes.
When LE is LOW the latches store the information that was present
at the D-inputs a set-up time preceding the HIGH-to-LOW transition
of LE. When OE is LOW, the contents of the eight latches are
available at the outputs. When OE is HIGH, the outputs go to the
high impedance OFF-state. Operation of the OE input does not
affect the state of the latches.
QUICK REFERENCE DATA
GND = 0V; T
amb
= 25°C; t
r
= t
f
v2.5
ns
SYMBOL
t
PHL
/t
PLH
C
I
C
PD
PARAMETER
Propagation delay
Dn to Qn
LE to Qn
Input capacitance
Power dissipation capacitance per latch
Notes 1, 2
CONDITIONS
C
L
= 50pF
V
CC
= 3.3V
TYPICAL
4.4
5.0
5.0
20
UNIT
ns
pF
pF
NOTES:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
µW)
P
D
= C
PD
×
V
CC2
×
f
i
)Σ
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz; C
L
= output load capacity in pF;
f
o
= output frequency in MHz; V
CC
= supply voltage in V;
Σ
(C
L
×
V
CC2
×
f
o
) = sum of the outputs.
2. The condition is V
I
= GND to V
CC.
ORDERING AND PACKAGE INFORMATION
PACKAGES
20-Pin Plastic SO
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
20-Pin Plastic SO
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
TEMPERATURE RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH
AMERICA
74LVC2373A D
74LVC2373A DB
74LVC2373A PW
74LVCH2373A D
74LVCH2373A DB
74LVCH2373A PW
NORTH AMERICA
74LVC2373A D
74LVC2373A DB
LVC2373APW DH
74LVCH2373A D
7LVCH2373A DB
VCH2373APW DH
PKG. DWG. #
SOT163-1
SOT339-1
SOT360-1
SOT163-1
SOT339-1
SOT360-1
1997 Mar 12
2
853–1940 17843
Philips Semiconductors
Product specification
Octal D-type transparent latch with 5-volt tolerant
inputs/outputs; damping resistor (3-State)
74LVC2373A
74LVCH2373A
PIN CONFIGURATION
OE
Q0
D0
D1
Q1
Q2
D2
D3
Q3
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
Q7
LOGIC SYMBOL
11
LE
3
D7
D6
Q6
Q5
D5
D4
Q4
LE
4
7
8
13
14
17
18
D0
D1
D2
D3
D4
D5
D6
D7
OE
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
2
5
6
9
12
15
16
19
SV00657
1
SV00658
PIN DESCRIPTION
PIN NUMBER
1
2, 5, 6, 9, 12,
15, 16, 19
3, 4, 7, 8, 13,
14, 17, 18
10
11
20
SYMBOL
OE
Q0–Q7
D0–D7
GND
LE
V
CC
FUNCTION
Output enable input (active LOW)
3-State latch outputs
FUNCTIONAL DIAGRAM
3
4
7
D0
D1
D2
D3
D4
D5
D6
D7
LATCH
1 to 8
3–STATE
OUTPUTS
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
2
5
6
9
12
15
16
19
Data inputs
Ground (0V)
Latch enable input (active HIGH)
Positive supply voltage
8
13
14
17
18
LOGIC SYMBOL (IEEE/IEC)
11
1
C1
EN1
11
1
LE
OE
SV00660
3
1D
2
4
7
8
13
14
17
18
5
6
9
12
15
16
19
FUNCTION TABLE
OPERATING
MODES
Enable and
read register
(transparent
mode)
Latch and read
register
Latch register
and disable
outputs
INPUTS
OE
L
L
L
L
H
H
LE
H
H
L
L
L
L
Dn
L
H
I
h
I
h
INTERNAL
LATCHES
L
H
L
H
L
H
OUTPUTS
Q0 to Q7
L
H
L
H
Z
Z
SV00659
H = HIGH voltage level
h = HIGH voltage level one set-up time prior to the HIGH-to-LOW
LE transition
L = LOW voltage level
I = LOW voltage level one set-up time prior to the HIGH-to-LOW
LE transition
X = Don’t care
Z = High impedance OFF-state
1997 Mar 12
3
Philips Semiconductors
Product specification
Octal D-type transparent latch with 5-volt tolerant
inputs/outputs; damping resistor (3-State)
74LVC2373A
74LVCH2373A
LOGIC DIAGRAM
D0
D1
D2
D3
D4
D5
D6
D7
Q
D
LATCH
1
LE LE
LE
OE
Q
D
LATCH
2
LE LE
Q
D
LATCH
3
LE LE
Q
D
LATCH
4
LE LE
Q
D
LATCH
5
LE LE
Q
D
LATCH
6
LE LE
Q
D
LATCH
7
LE LE
Q
D
LATCH
8
LE LE
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
SV00661
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
CC
V
CC
V
I
V
I/O
V
O
T
amb
t
r
, t
f
PARAMETER
DC supply voltage (for max. speed performance)
DC supply voltage (for low-voltage applications)
DC input voltage range
DC input voltage range for I/Os
DC output voltage range
Operating free-air temperature range
Input rise and fall times
V
CC
= 1.2 to 2.7V
V
CC
= 2.7 to 3.6V
CONDITIONS
LIMITS
MIN
2.7
1.2
0
0
0
–40
0
0
MAX
3.6
3.6
5.5
V
CC
V
CC
+85
20
10
UNIT
V
V
V
V
V
°C
ns/V
ABSOLUTE MAXIMUM RATINGS
1
In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to GND (ground = 0V).
SYMBOL
V
CC
I
IK
V
I
V
I/O
I
OK
V
OUT
V
OUT
I
OUT
I
GND
, I
CC
T
stg
P
TOT
PARAMETER
DC supply voltage
DC input diode current
DC input voltage
DC input voltage range for I/Os
DC output diode current
DC output voltage; output HIGH or LOW
DC output voltage; output 3-State
DC output source or sink current
DC V
CC
or GND current
Storage temperature range
Power dissipation per package
– plastic mini-pack (SO)
– plastic shrink mini-pack (SSOP and TSSOP)
above +70°C derate linearly with 8 mW/K
above +60°C derate linearly with 5.5 mW/K
V
O
uV
CC
or V
O
t
0
Note 2
Note 2
V
O
= 0 to V
CC
V
I
t0
Note 2
CONDITIONS
RATING
–0.5 to +6.5
–50
–0.5 to +5.5
–0.5 to V
CC
+0.5
±50
–0.5 to V
CC
+0.5
–0.5 to +6.5
±50
±100
–60 to +150
500
500
UNIT
V
mA
V
V
mA
V
V
mA
mA
°C
mW
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1997 Mar 12
4
Philips Semiconductors
Product specification
Octal D-type transparent latch with 5-volt tolerant
inputs/outputs; damping resistor (3-State)
74LVC2373A
74LVCH2373A
DC ELECTRICAL CHARACTERISTICS
Over recommended operating conditions. Voltages are referenced to GND (ground = 0V).
LIMITS
SYMBOL
PARAMETER
V
CC
= 1.2V
V
CC
= 2.7 to 3.6V
V
CC
= 1.2V
V
CC
= 2.7 to 3.6V
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= –100µA
V
OH
HIGH level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –12mA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= –24mA
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= –6mA
7
V
OH
HIGH level output voltage
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= –100µA
7
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
=
V
O
OL
LOW level output voltage
–12mA
7
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= 100µA
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 24mA
V
CC
= 2.7V; V
I
= V
IH
or V
IL
; I
O
= 6mA
7
V
CC
= 3.0V; V
I
= V
IH
or V
IL
; I
O
= 100µA
7
V
CC
= 3.0V; V
I
= V
IH
or V
IL;
I
O
= 12mA
7
I
I
I
IHZ
/I
ILZ
I
OZ
I
CC
∆I
CC
I
BHL
I
BHH
I
BHLO
I
BHHO
Input leakage current
Input current for common I/O pins
3-State output OFF-state current
Quiescent supply current
Additional quiescent supply current per
input pin
Bushold LOW sustaining current
2, 3, 4
Bushold HIGH sustaining current
2, 3, 4
Bushold LOW overdrive
current
2, 3, 5
Bushold HIGH overdrive current
2, 3, 5
V
CC
= 3.6V; V
I
= 5.5V or GND
V
CC
= 3.6V; V
I
= V
CC
or GND
V
CC
= 3.6V; V
I
= V
IH
or V
IL
; V
O
= V
CC
or GND
V
CC
= 3.6V; V
I
= V
CC
or GND; I
O
= 0
V
CC
= 2.7V to 3.6V; V
I
= V
CC
–0.6V; I
O
= 0
V
CC
= 3.0V; V
I
=0.8V
V
CC
= 3.0V; V
I
=2.0V
V
CC
= 3.6V
V
CC
= 3.6V
75
–75
500
–500
Not for I/O pins
±0.1
±0.1
0.1
0.1
5
–
–
–
–
GND
V
CC
*0.2
V
CC
*0.6
V
CC
*1.0
V
CC
*0.5
V
CC
*0.2
V
CC
*0.8
GND
0.20
0.55
0.40
0.20
0.55
±5
±15
±10
20
500
–
–
–
–
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
V
V
CC
V
V
CC
V
TEST CONDITIONS
Temp = -40°C to +85°C
MIN
V
IH
V
IL
HIGH level Input voltage
LOW level Input voltage
V
CC
2.0
GND
0.8
TYP
1
MAX
V
V
UNIT
V
OL
LOW level output voltage
NOTES:
1. All typical values are at V
CC
= 3.3V and T
amb
= 25°C.
2. Valid for data inputs of bushold parts (LVCH-A) only.
3. For data inputs only, control inputs do not have a bushold circuit.
4. The specified sustaining current at the data inputs do not have a bushold circuit.
5. The specified overdrive current at the data input forces the data input to the opposite logic input state.
6. For bushold parts, the bushold circuit is switched off when V
I
exceeds V
CC
allowing 5.5V on the input terminal.
7. For data outputs of damping resistor parts only.
1997 Mar 12
5
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