Datasheet

December 1990 4
Philips Semiconductors Product specification
BCD to 7-segment latch/decoder/driver 74HC/HCT4511
FUNCTION TABLE
Note
1. Depends upon the BCD-code applied during the LOW-to-HIGH transition of
LE.
H = HIGH voltage level
L = LOW voltage level
X = don’t care
INPUTS OUTPUTS
DISPLAY
LE BI LTD
4
D
3
D
2
D
1
Q
a
Q
b
Q
c
Q
d
Q
e
Q
f
Q
g
XXLXXXX HHHHHH H8
XLHXXXXLLLLLL Lblank
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
H
H
L
H
L
H
H
L
H
H
H
H
H
H
H
H
L
H
H
L
H
H
H
L
H
L
H
L
L
L
L
L
H
H
0
1
2
3
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
H
H
L
H
L
H
L
H
L
H
H
L
L
H
H
H
H
H
L
H
H
L
L
L
H
L
H
H
H
L
H
H
H
L
4
5
6
7
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
L
H
L
H
H
H
L
L
H
H
L
L
H
H
L
L
H
L
L
L
H
L
L
L
H
H
L
L
H
H
L
L
8
9
blank
blank
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
L
H
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
blank
blank
blank
blank
HHHXXXX
(1) (1)
Fig.4 Functional diagram.