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74AHCT273 Datenblatt(PDF) 5 Page - NXP Semiconductors

Teilenummer 74AHCT273
Bauteilbeschribung  Octal D-type flip-flop with reset; positive-edge trigger
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Hersteller  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

74AHCT273 Datenblatt(HTML) 5 Page - NXP Semiconductors

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74AHC_AHCT273_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 13 May 2008
5 of 18
NXP Semiconductors
74AHC273; 74AHCT273
Octal D-type flip-flop with reset; positive-edge trigger
6.
Functional description
[1]
H = HIGH voltage level;
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition;
L = LOW voltage level;
l = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition;
↑ = LOW-to-HIGH;
X = don’t care.
7.
Limiting values
[1]
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2]
For SO20 packages: above 70
°C the value of P
tot derates linearly at 8 mW/K.
For TSSOP20 packages: above 60
°C the value of P
tot derates linearly at 5.5 mW/K.
For DHVQFN20 packages: above 60
°C the value of Ptot derates linearly at 4.5 mW/K.
D6
17
data input
D7
18
data input
Q7
19
flip-flop output
VCC
20
supply voltage
Table 2.
Pin description …continued
Symbol
Pin
Description
Table 3.
Function table[1]
Operating mode
Control
Input
Output
MR
CP
Dn
Qn
Reset (clear)
L
X
X
L
Load ‘1’
H
hH
Load ‘0’
H
lL
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
supply voltage
−0.5
+7.0
V
VI
input voltage
−0.5
+7.0
V
IIK
input clamping current
VI < −0.5 V
[1]
−20
-
mA
IOK
output clamping current
VO < −0.5 V or VO >VCC + 0.5 V
[1]
−20
+20
mA
IO
output current
VO = −0.5 V to (VCC + 0.5 V)
−25
+25
mA
ICC
supply current
-
+75
mA
IGND
ground current
−75
-
mA
Tstg
storage temperature
−65
+150
°C
Ptot
total power dissipation
Tamb = −40 °C to +125 °C
[2] -
500
mW


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