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MC74VHCT373A_11 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. MC74VHCT373A_11
Description  Octal D-Type Latch with 3-State Output
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC74VHCT373A
http://onsemi.com
2
Figure 1. Logic Diagram
DATA
INPUTS
D0
D1
D2
D3
D4
D5
D6
D7
18
17
14
13
8
7
4
3
1
OE
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
16
15
12
9
6
5
2
NONINVERTING
OUTPUTS
11
LE
Figure 2. Pin Assignment
Q2
D1
D0
Q0
OE
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
VCC
LE
Q4
D4
D5
Q5
MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
DC Supply Voltage
– 0.5 to + 7.0
V
Vin
DC Input Voltage
– 0.5 to + 7.0
V
Vout
DC Output Voltage
Outputs in 3−State
High or Low State
– 0.5 to + 7.0
– 0.5 to VCC + 0.5
V
IIK
Input Diode Current
− 20
mA
IOK
Output Diode Current (VOUT < GND; VOUT > VCC)
± 20
mA
Iout
DC Output Current, per Pin
± 25
mA
ICC
DC Supply Current, VCC and GND Pins
± 75
mA
PD
Power Dissipation in Still Air,
SOIC Packages†
TSSOP Package†
500
450
mW
Tstg
Storage Temperature
– 65 to + 150
_C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings
applied to the device are individual stress limit values (not normal operating conditions) and are
not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
†Derating − SOIC Packages: – 7 mW/_C from 65_ to 125_C
TSSOP Package: − 6.1 mW/_C from 65_ to 125_C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
VCC
DC Supply Voltage
4.5
5.5
V
Vin
DC Input Voltage
0
5.5
V
Vout
DC Output Voltage
Outputs in 3−State
High or Low State
0
0
5.5
VCC
V
TA
Operating Temperature
− 40
+ 85
_C
tr, tf
Input Rise and Fall Time
VCC =5.0V ±0.5V
0
20
ns/V
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 cir-
cuit. For proper operation, Vin and
Vout should be constrained to the
range GND v (Vin or Vout) 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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