Datasheet

January 1995 5
Philips Semiconductors Product specification
BCD to 7-segment latch/decoder/driver
HEF4543B
MSI
AC CHARACTERISTICS
V
SS
= 0 V; T
amb
=25°C; C
L
= 50 pF; input transition times 20 ns
V
DD
V
SYMBOL MIN. TYP. MAX.
TYPICAL EXTRAPOLATION
FORMULA
Propagation delays
D
n
O
n
5 180 360 ns 153 ns + (0,55 ns/pF) C
L
HIGH to LOW 10 t
PHL
75 150 ns 64 ns + (0,23 ns/pF) C
L
15 55 110 ns 47 ns + (0,16 ns/pF) C
L
5 180 360 ns 153 ns + (0,55 ns/pF) C
L
LOW to HIGH 10 t
PLH
75 150 ns 64 ns + (0,23 ns/pF) C
L
15 55 110 ns 47 ns + (0,16 ns/pF) C
L
LD O
n
5 170 340 ns 143 ns + (0,55 ns/pF) C
L
HIGH to LOW 10 t
PHL
80 160 ns 69 ns + (0,23 ns/pF) C
L
15 60 120 ns 52 ns + (0,16 ns/pF) C
L
5 190 380 ns 163 ns + (0,55 ns/pF) C
L
LOW to HIGH 10 t
PLH
80 160 ns 69 ns + (0,23 ns/pF) C
L
15 60 120 ns 52 ns + (0,16 ns/pF) C
L
BI O
n
5 145 290 ns 118 ns + (0,55 ns/pF) C
L
HIGH to LOW 10 t
PHL
65 130 ns 54 ns + (0,23 ns/pF) C
L
15 45 90 ns 37 ns + (0,16 ns/pF) C
L
5 125 250 ns 98 ns + (0,55 ns/pF) C
L
LOW to HIGH 10 t
PLH
55 110 ns 54 ns + (0,23 ns/pF) C
L
15 40 80 ns 32 ns + (0,16 ns/pF) C
L
Output transition times 5 60 120 ns 10 ns + (1,0 ns/pF) C
L
HIGH to LOW 10 t
THL
30 60 ns 9 ns + (0,42 ns/pF) C
L
15 20 40 ns 6 ns + (0,28 ns/pF) C
L
5 60 120 ns 10 ns + (1,0 ns/pF) C
L
LOW to HIGH 10 t
TLH
30 60 ns 9 ns + (0,42 ns/pF) C
L
15 20 40 ns 6 ns + (0,28 ns/pF) C
L
Minimum LD 5 60 30 ns
pulse width; HIGH 10 t
WLDH
30 15 ns
15 20 10 ns
Set-up time 5 40 20 ns
D
n
LD 10 t
su
20 5 ns
15 15 0 ns
Hold time 5 0 15 ns
D
n
LD 10 t
hold
15 0 ns
15 20 5 ns