Philips Semiconductors
74HC273; 74HCT273
Octal D-type flip-flop with reset; positive-edge trigger
6. Pinning information
6.1 Pinning
74HC273
74HCT273
terminal 1
index area
20 V
CC
19 Q7
18 D7
17 D6
16 Q6
15 Q5
14 D5
GND
(1)
13 D4
12 Q4
GND 10
CP 11
MR
2
3
4
5
6
7
8
9
1
Q0
D0
MR
Q0
D0
D1
Q1
Q2
D2
D3
Q3
1
2
3
4
5
6
7
8
9
20 V
CC
19 Q7
18 D7
17 D6
16 Q6
15 Q5
14 D5
13 D4
12 Q4
11 CP
001aae053
74HC273
74HCT273
D1
Q1
Q2
D2
D3
Q3
GND 10
001aae054
Transparent top view
(1) The die substrate is attached to this
pad using conductive die attach
material. It can not be used as supply
pin or output.
Fig 5. Pin configuration DIP20, SO20,
SSOP20 and TSSOP20
Fig 6. Pin configuration DHVQFN20
6.2 Pin description
Table 3:
Symbol
MR
Q0
D0
D1
Q1
Q2
D2
D3
Q3
GND
CP
Q4
D4
D5
74HC_HCT273_3
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
master reset input (active LOW)
flip-flop output 0
data input 0
data input 1
flip-flop output 1
flip-flop output 2
data input 2
data input 3
flip-flop output 3
ground (0 V)
clock input (LOW-to-HIGH, edge-triggered)
flip-flop output 4
data input 4
data input 5
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 24 January 2006
5 of 26
PHILIPS [ NXP SEMICONDUCTORS ]
