74AHC574BQ Просмотр технического описания (PDF) - NXP Semiconductors.
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74AHC574BQ Datasheet PDF : 18 Pages
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NXP Semiconductors
74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
6. Functional description
Table 3. Function table[1]
Operating mode
Load and read register
Load register and disable output
Input
OE
CP
Dn
L
↑
l
L
↑
h
H
↑
l
H
↑
h
[1] H = HIGH voltage level;
h = HIGH voltage level one setup time prior to the HIGH-to-LOW CP transition;
L = LOW voltage level;
l = LOW voltage level one setup time prior to the HIGH-to-LOW CP transition;
Z = high-impedance OFF-state;
↑ = LOW-to-HIGH clock transition.
7. Limiting values
Internal
flip-flop
L
H
L
H
Output
Qn
L
H
Z
Z
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
supply current
ground current
storage temperature
total power dissipation
SO20 package
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] −20
[1] -
-
-
−75
−65
+7.0 V
+7.0 V
-
mA
±20
mA
±25
mA
75
mA
-
mA
+150 °C
[2] -
500 mW
TSSOP20 package
[3] -
500 mW
DHVQFN20 package
[4] -
500 mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] Ptot derates linearly with 8 mW/K above 70 °C.
[3] Ptot derates linearly with 5.5 mW/K above 60 °C.
[4] Ptot derates linearly with 4.5 mW/K above 60 °C.
74AHC_AHCT574_2
Product data sheet
Rev. 02 — 24 January 2008
© NXP B.V. 2008. All rights reserved.
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