Standard ics bu4538b – Rainbow Electronics BU4538B User Manual
Page 3

3
Standard ICs
BU4538B
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
t
TLH
—
100
—
ns
5
—
—
50
—
10
—
40
—
15
t
THL
—
100
—
ns
5
—
—
50
—
10
—
40
—
15
t
PLH
t
PHL
—
300
—
ns
5
—
—
150
—
10
—
100
—
15
t
PLH
t
PHL
—
250
—
ns
5
—
—
125
—
10
—
95
—
15
t
WIN
—
50
—
ns
5
—
—
30
—
10
—
25
—
15
t
WOUT1
185
200
215
µ
s
5
185
200
215
10
185
200
215
15
t
WOUT2
8.8
9.4
10.0
ms
5
8.8
9.4
10.0
10
8.8
9.4
10.0
15
t
rr
—
0
—
ns
5
—
—
0
—
10
—
0
—
15
C
IN
—
5
—
pF
—
—
C
X
= 2000pF, R
X
= 100k
Ω
C
X
= 0.1
µ
F, R
X
= 100k
Ω
V
DD
(V)
Output rise time
Output fall time
Propagation delay
time A, B to Q, Q
Propagation delay
time C
D
to Q, Q
Minimum input
pulse width
Output pulse width 1
Output pulse width 2
Minimum retrigger
time
Input capacitance
Switching characteristics (unless otherwise noted, Ta = 25°C, C
L
= 50pF, V
SS
= 0V)
•
Recommended operating conditions
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
R
X
5
—
1000
k
Ω
—
C
X
No Limit
pF
—
External timing resistance
External timing capacitance