MOTOROLA MC74HC373ADT, MC74HC373ADTEL, MC74HC373ADTR2, MC74HC373AH, MC74HC373AFR1 Datasheet
...
Semiconductor Components Industries, LLC, 2000
March, 2000 – Rev. 8
1 Publication Order Number:
MC74HC373A/D
MC74HC373A
Octal 3-State Non-Inverting
Transparent Latch
High–Performance Silicon–Gate CMOS
The MC74HC373A is identical in pinout to the LS373. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LSTTL outputs.
These latches appear transparent to data (i.e., the outputs change
asynchronously) when Latch Enable is high. When Latch Enable goes
low, data meeting the setup and hold time becomes latched.
The Output Enable input does not affect the state of the latches, but
when Output Enable is high, all device outputs are forced to the
high–impedance state. Thus, data may be latched even when the
outputs are not enabled.
The HC373A is identical in function to the HC573A which has the
data inputs on the opposite side of the package from the outputs to
facilitate PC board layout.
The HC373A is the non–inverting version of the HC533A.
• Output Drive Capability: 15 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
• Chip Complexity: 186 FETs or 46.5 Equivalent Gates
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MARKING
DIAGRAMS
1
20
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
SOIC WIDE–20
DW SUFFIX
CASE 751D
HC373A
AWLYYWW
PDIP–20
N SUFFIX
CASE 738
1
20
MC74HC373AN
AWLYYWW
TSSOP–20
DT SUFFIX
CASE 948G
1
20
1
20
1
20
Device Package Shipping
ORDERING INFORMATION
MC74HC373AN PDIP–20 1440 / Box
MC74HC373ADW SOIC–WIDE
38 / Rail
MC74HC373ADWR2 SOIC–WIDE 1000 / Reel
MC74HC373ADT TSSOP–20 75 / Rail
MC74HC373ADTR2 TSSOP–20
2500 / Reel
HC
373A
ALYW
1
20
MC74HC373A
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2
LOGIC DIAGRAM
DATA
INPUTS
D0
D1
D2
D3
D4
D5
D6
D7
18
17
14
13
8
7
4
3
1
OUTPUT ENABLE
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
16
15
12
9
6
5
2
PIN 20 = V
CC
PIN 10 = GND
NONINVERTING
OUTPUTS
11
LATCH ENABLE
FUNCTION TABLE
Inputs Output
Output Latch
Enable Enable D Q
LHHH
LHLL
L L X No Change
HXXZ
X = Don’t Care
Z = High Impedance
PIN ASSIGNMENT
Q2
D1
D0
Q0
OUTPUT
ENABLE
GND
Q3
D3
D2
Q1 5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
11
12
13
Q6
D6
D7
Q7
V
CC
LATCH
ENABLE
Q4
D4
D5
Q5
Design Criteria
Value
Units
Internal Gate Count*
46.5
ea
Internal Gate Propagation Delay
1.5
ns
Internal Gate Power Dissipation
5.0
µW
Speed Power Product
0.0075
pJ
*Equivalent to a two–input NAND gate.
MC74HC373A
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3
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
V
CC
DC Supply Voltage (Referenced to GND)
– 0.5 to + 7.0
V
V
in
DC Input Voltage (Referenced to GND)
– 0.5 to VCC + 0.5
V
V
out
DC Output Voltage (Referenced to GND)
– 0.5 to VCC + 0.5
V
I
in
DC Input Current, per Pin
± 20
mA
I
out
DC Output Current, per Pin
± 35
mA
I
CC
DC Supply Current, VCC and GND Pins
± 75
mA
ÎÎ
Î
P
D
ОООООООООООО
Î
Power Dissipation in Still Air, Plastic DIP†
SOIC Package†
TSSOP Package†
ÎÎÎ
Î
750
500
450
Î
Î
mW
T
stg
Storage Temperature
– 65 to + 150
_
C
ÎÎ
Î
T
L
ОООООООООООО
Î
Lead Temperature, 1 mm from Case for 10 Seconds
(Plastic DIP, SOIC, SSOP or TSSOP Package)
ÎÎÎ
Î
260
Î
Î
_
C
*Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
†Derating — Plastic DIP: – 10 mW/_C from 65_ to 125_C
SOIC Package: – 7 mW/_C from 65_ to 125_C
TSSOP Package: – 6.1 mW/_C from 65_ to 125_C
For high frequency or heavy load considerations, see Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book (DL129/D).
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
ÎÎ
Max
Unit
V
CC
DC Supply Voltage (Referenced to GND)
2.0
ÎÎ
6.0
V
Vin, V
out
DC Input Voltage, Output Voltage (Referenced to GND)
0
ÎÎ
V
CC
V
T
A
Operating Temperature, All Package Types
– 55
ÎÎ
+ 125
_
C
ÎÎ
Î
tr, t
f
ООООООООООООО
Î
Input Rise and Fall Time VCC = 2.0 V
(Figure 1) VCC = 4.5 V
VCC = 6.0 V
Î
Î
0
0
0
ÎÎ
ÎÎ
1000
500
400
Î
Î
ns
DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
Guaranteed Limit
ÎÎ
Î
Symbol
ООООООО
Î
Parameter
ООООООО
Î
Test Conditions
ÎÎ
Î
V
CC
V
ÎÎ
Î
– 55 to
25_C
ÎÎÎ
Î
Î
Î
v
85_C
ÎÎ
Î
v
125_C
Î
Î
Unit
ÎÎ
Î
ÎÎ
Î
V
IH
ООООООО
Î
ООООООО
Î
Minimum High–Level Input
Voltage
ООООООО
Î
ООООООО
Î
V
out
= VCC – 0.1 V
|I
out
| v 20 µA
ÎÎ
Î
ÎÎ
Î
2.0
3.0
4.5
6.0
ÎÎ
Î
ÎÎ
Î
1.5
2.1
3.15
4.2
ÎÎÎ
Î
Î
Î
Î
Î
Î
1.5
2.1
3.15
4.2
ÎÎ
Î
ÎÎ
Î
1.5
2.1
3.15
4.2
Î
Î
Î
Î
V
ÎÎ
Î
ÎÎ
Î
V
IL
ООООООО
Î
ООООООО
Î
Maximum Low–Level Input
Voltage
ООООООО
Î
ООООООО
Î
V
out
= 0.1 V
|I
out
| v 20 µA
ÎÎ
Î
ÎÎ
Î
2.0
3.0
4.5
6.0
ÎÎ
Î
ÎÎ
Î
0.5
0.9
1.35
1.8
ÎÎÎ
Î
Î
Î
Î
Î
Î
0.5
0.9
1.35
1.8
ÎÎ
Î
ÎÎ
Î
0.5
0.9
1.35
1.8
Î
Î
Î
Î
V
ÎÎ
Î
V
OH
ООООООО
Î
Minimum High–Level Output
Voltage
ООООООО
Î
Vin = V
IH
|I
out
| v 20 µA
ÎÎ
Î
2.0
4.5
6.0
ÎÎ
Î
1.9
4.4
5.9
ÎÎÎ
Î
Î
Î
1.9
4.4
5.9
ÎÎ
Î
1.9
4.4
5.9
Î
Î
V
ÎÎÎОООООООÎООООООО
Î
Vin = V
IH
|I
out
| v 2.4 mA
|I
out
| v 6.0 mA
|I
out
| v 7.8 mA
ÎÎ
Î
3.0
4.5
6.0
ÎÎ
Î
2.48
3.98
5.48
ÎÎÎ
Î
Î
Î
2.34
3.84
5.34
ÎÎ
Î
2.2
3.7
5.2
Î
Î
ÎÎ
Î
V
OL
ООООООО
Î
Maximum Low–Level Output
Voltage
ООООООО
Î
Vin = V
IL
|I
out
| v 20 µA
ÎÎ
Î
2.0
4.5
6.0
ÎÎ
Î
0.1
0.1
0.1
ÎÎÎ
Î
Î
Î
0.1
0.1
0.1
ÎÎ
Î
0.1
0.1
0.1
Î
Î
V
ÎÎÎОООООООÎООООООО
Î
Vin = V
IL
|I
out
| v 2.4 mA
|I
out
| v 6.0 mA
|I
out
| v 7.8 mA
ÎÎ
Î
3.0
4.5
6.0
ÎÎ
Î
0.26
0.26
0.26
ÎÎÎ
Î
Î
Î
0.33
0.33
0.33
ÎÎ
Î
0.4
0.4
0.4
Î
Î
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high–impedance circuit. For proper operation, Vin and
V
out
should be constrained to the
range GND v (Vin or V
out
) v VCC.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or VCC).
Unused outputs must be left open.
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