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Standard ics bu4538b – Rainbow Electronics BU4538B User Manual

Page 3

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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

C

X

= 0.1

µ

F, R

X

= 100k

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

C

X

No Limit

pF

External timing resistance

External timing capacitance