HEF4538BT 参数 Datasheet PDF下载

NXP Semiconductors

HEF4538B

Dual precision monostable multivibrator

Table 6.

Static characteristics

…continued

V

SS

= 0 V; V

I

= V

SS

or V

DD

unless otherwise specified.

Symbol Parameter

I

OH

HIGH-level

output current

Conditions

V

O

= 2.5 V

V

O

= 4.6 V

V

O

= 9.5 V

V

O

= 13.5 V

I

OL

LOW-level

output current

V

O

= 0.4 V

V

O

= 0.5 V

V

O

= 1.5 V

I

I

C

I

input leakage

current

input

capacitance

nREXT/CEXT

V

DD

5V

5V

10 V

15 V

5V

10 V

15 V

15 V

-

T

amb

=

40 C

Min

-

-

-

-

0.64

1.6

4.2

-

-

Max

1.7

0.64

1.6

4.2

-

-

-

0.1

-

T

amb

= 25

C

Min

-

-

-

-

0.5

1.3

3.4

-

-

Max

1.4

0.5

1.3

3.4

-

-

-

0.1

7.5

T

amb

= 85

C

T

amb

= 125

C

Unit

Min

-

-

-

-

0.36

0.9

2.4

-

-

Max

1.1

0.36

0.9

2.4

-

-

-

1.0

-

Min

-

-

-

-

0.36

0.9

2.4

-

-

Max

1.1

0.9

2.4

-

-

-

1.0

-

mA

mA

mA

mA

mA

mA

A

pF

0.36

mA

Table 7.

Typical static characteristics

V

SS

= 0 V; V

I

= V

SS

or V

DD

; T

amb

= +25



C.

Symbol

I

DD

Parameter

supply current

Conditions

active state

V

DD

5V

10 V

15 V

C

I

[1]

Typ

55

150

220

15

Unit

A

A

A

pF

input capacitance

nREXT/CEXT

-

Only one monostable is switching: for the specified current during the output pulse (output nQ is HIGH).

10. Dynamic characteristics

Table 8.

Dynamic characteristics

V

SS

= 0 V; T

amb

= 25



C; for test circuit see

Symbol Parameter

t

PHL

HIGH to LOW

propagation

delay

Conditions

nA, nB to nQ;

see

V

DD

5V

10 V

15 V

nCD to nQ; see

5V

10 V

15 V

t

PLH

LOW to HIGH

propagation

delay

nA, nB to nQ;

see

5V

10 V

15 V

nCD to nQ; see

5V

10 V

15 V

Extrapolation formula

Min

193 ns + (0.55 ns/pF) C

L

74 ns + (0.23 ns/pF) C

L

52 ns + (0.16 ns/pF) C

L

98 ns + (0.55 ns/pF) C

L

44 ns + (0.23 ns/pF) C

L

32 ns + (0.16 ns/pF) C

L

173 ns + (0.55 ns/pF) C

L

79 ns + (0.23 ns/pF) C

L

52 ns + (0.16 ns/pF) C

L

98 ns + (0.55 ns/pF) C

L

44 ns + (0.23 ns/pF) C

L

32 ns + (0.16 ns/pF) C

L

-

-

-

-

-

-

-

-

-

-

-

-

Typ

220

85

60

125

55

40

200

90

60

125

55

40

Max

440

190

120

250

110

80

460

180

120

250

110

80

Unit

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

HEF4538B

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2011. All rights reserved.

Product data sheet

Rev. 8 — 16 November 2011

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