
Philips Semiconductors
BCD to 7-segment latch/decoder/driver
Minimum EL
pulse width; LOW
Set-up time
Dn → EL
Hold-time
Dn → EL
VDD
V
SYMBOL MIN. TYP. MAX.
5
80 40
ns
10 tWELL
15
40 20
ns
35 17
ns
5
50 25
ns
10 tsu
15
25 12
ns
20
9
ns
5
60 30
ns
10 thold
15
30 15
ns
25 12
ns
Product specification
HEF4511B
MSI
TYPICAL EXTRAPOLATION
FORMULA
see also waveforms
Fig.8
Conditions:
DD = LOW
DA = DB = BI = LT = HIGH
Fig.8 Waveforms showing minimum EL pulse width, set-up and hold time for DC to EL.
January 1995
9