MC74VHC595(2007) 查看數據表（PDF） - ON Semiconductor
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MC74VHC595 Datasheet PDF : 11 Pages
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MC74VHC595
FUNCTION TABLE
Inputs
Resulting Function
Operation
Reset
(SCLR)
Serial
Input
(SI)
Shift
Clock
(SCK)
Reg
Clock
(RCK)
Output
Enable
(OE)
Shift
Register
Contents
Storage
Register
Contents
Serial
Output
(SQH)
Parallel
Outputs
(QA - QH)
Clear shift register
L
X
X
L, H, ↓
L
L
U
L
U
Shift data into shift
register
Registers remains
unchanged
H
D
↑
L, H, ↓
L
D→SRA;
U
SRG→SRH
U
SRN→SRN+1
H
X
L, H, ↓
X
L
U
**
U
**
Transfer shift register
H
X
L, H, ↓
↑
L
contents to storage
register
U
SRN³STRN
*
SRN
Storage register remains
X
X
X
L, H, ↓
L
*
unchanged
U
*
U
Enable parallel outputs
X
X
X
X
L
*
**
*
Enabled
Force outputs into high
X
X
X
X
H
*
impedance state
**
*
Z
SR = shift register contents
D = data (L, H) logic level
inputs
STR = storage register contents U = remains unchanged
↓ = High-to-Low
↑ = Low-to-High
* = depends on Reset and Shift Clock
** = depends on Register Clock input
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ MAXIMUM RATINGS*
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Symbol
Parameter
Value
Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ VCC DC Supply Voltage
– 0.5 to + 7.0
V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Vin DC Input Voltage
– 0.5 to + 7.0
V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Vout DC Output Voltage
– 0.5 to VCC + 0.5 V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ IIK Input Diode Current
- 20
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ IOK Output Diode Current
± 20
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Iout DC Output Current, per Pin
± 25
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ICC DC Supply Current, VCC and GND Pins
± 50
mA
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ PD Power Dissipation in Still Air,
SOIC Packages†
500
mW
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TSSOP Package†
450
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Tstg Storage Temperature
– 65 to + 150
_C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ * Absolute maximum continuous ratings are those values beyond which damage to the device
may occur. Exposure to these conditions or conditions beyond those indicated may
adversely affect device reliability. Functional operation under absolute-maximum-rated
conditions is not implied.
†Derating — SOIC Packages: – 7 mW/_C from 65_ to 125_C
TSSOP Package: - 6.1 mW/_C from 65_ to 125_C
ąThis 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.
ąUnused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or VCC).
Unused outputs must be left open.
RECOMMENDED OPERATING CONDITIONS
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Symbol
Parameter
Min Max Unit
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ VCC DC Supply Voltage
2.0 5.5 V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Vin
DC Input Voltage
0
5.5 V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Vout DC Output Voltage
0
VCC
V
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TA
Operating Temperature, All Package Types
- 55 + 125 _C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tr, tf
Input Rise and Fall Time
VCC = 3.3V ±0.3V 0
VCC =5.0V ±0.5V 0
100 ns/V
20
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