74AHC594 查看數據表（PDF） - Philips Electronics
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74AHC594 Datasheet PDF : 29 Pages
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Philips Semiconductors
74AHC594; 74AHCT594
8-bit shift register with output register
7. Functional description
Table 3. Function table[1]
Function
Clear shift register
Clear storage register
Load DS into shift register stage 0, advance previous stage data to the next stage
Transfer shift register data to storage register and outputs Qn
Inputs
SHR STR
L
X
X
L
HX
X
H
SHCP STCP
X
X
X
X
↑
X
X
↑
DS
X
X
H or L
X
[1] H = HIGH voltage level;
L = LOW voltage level;
↑ = LOW-to-HIGH transition;
X = don’t care.
8. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min
Max
Unit
VCC
VI
IIK
IOK
IO
ICC
IGND
Tstg
Ptot
supply voltage
input voltage
input clamping current
output clamping current
output current
quiescent supply current
ground current
storage temperature
total power dissipation
VI < −0.5 V
VO < −0.5 V or VO > VCC + 0.5 V
VO = −0.5 V to VCC + 0.5 V
Tamb = −40 °C to +125 °C
−0.5
−0.5
[1] -
[1] -
-
-
-
−65
[2] -
+7.0
V
+7.0
V
−20
mA
±20
mA
±25
mA
75
mA
−75
mA
+150
°C
500
mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO16 packages: above 70 °C the value of Ptot derates linearly with 8 mW/K.
For (T)SSOP16 packages: above 60 °C the value of Ptot derates linearly with 5.5 mW/K.
For DHVQFN16 packages: above 60 °C the value of Ptot derates linearly with 4.5 mW/K.
74AHC_AHCT594_1
Product data sheet
Rev. 01 — 4 July 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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