Philips Semiconductors
74HC273; 74HCT273
Octal D-type flip-flop with reset; positive-edge trigger
Pin description
…continued
Pin
15
16
17
18
19
20
Description
flip-flop output 5
flip-flop output 6
data input 6
data input 7
flip-flop output 7
supply voltage
Table 3:
Symbol
Q5
Q6
D6
D7
Q7
V
CC
7. Functional description
7.1 Function table
Table 4:
Operating
modes
Reset (clear)
Load 1
Load 0
[1]
Function table
Control
MR
L
H
H
CP
X
↑
↑
Input
Dn
X
h
I
Output
Qn
L
H
L
H = HIGH voltage level;
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition;
L = LOW voltage level;
I = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition;
↑
= LOW-to-HIGH transition;
X = don’t care.
8. Limiting values
Table 5:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol
V
CC
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
Parameter
supply voltage
input clamping current
V
I
<
−0.5
V or V
I
> V
CC
+ 0.5 V
output clamping current V
O
<
−0.5
V or V
O
>
V
CC
+ 0.5 V
output current
quiescent supply
current
ground current
storage temperature
V
O
=
−0.5
V to (V
CC
+ 0.5 V)
Conditions
Min
−0.5
-
-
-
-
-
−65
Max
+7
±20
±20
±25
50
−50
+150
Unit
V
mA
mA
mA
mA
mA
°C
74HC_HCT273_3
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 24 January 2006
6 of 26
PHILIPS [ NXP SEMICONDUCTORS ]
