Datasheet HEF4528BU, HEF4528BT, HEF4528BPB, HEF4528BP, HEF4528BDB Datasheet (Philips)

DATA SH EET

Product specification
File under Integrated Circuits, IC04

January 1995

INTEGRATED CIRCUITS

HEF4528B
MSI

Dual monostable multivibrator

For a complete data sheet, please also download:

•The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC

•The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC

January 1995 2

Philips Semiconductors Product specification

Dual monostable multivibrator

HEF4528B

MSI

DESCRIPTION

The HEF4528B is a dual retriggerable-resettable
monostable multivibrator. Each multivibrator has an active
LOW input (I0), and active HIGH input (I1), an active LOW
clear direct input (CD), an output (O) and its complement
(O), and two pins for connecting the external timing
components (C

TC

(1)

, RCTC).

An external timing capacitor (Ct) must be connected
between CTCand RCTCand an external resistor (Rt) must
be connected between RCTCand VDD. The duration of the

(1) Always connected to ground.

output pulse is determined by the external timing
components Ct and Rt.

A HIGH to LOW transition on I0 when I1is LOW or a LOW
to HIGH transition on I1when I0is HIGH produces a
positive pulse (LOW-HIGH-LOW) and O and a negative
pulse (HIGH-LOW-HIGH) on O if the CDis HIGH. A LOW

on CDforces O LOW, O HIGH and inhibits any further
pulses until CDis HIGH.

Fig.1 Functional diagram.

PINNING

FAMILY DATA, I

DD

LIMITS category MSI

See Family Specifications

HEF4528BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4528BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)
HEF4528BT(D): 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America

I

0A,I0B

input (HIGH to LOW triggered)

I

1A

, I

1B

input (LOW to HIGH triggered)

CDA, C

DB

clear direct input (active LOW)

O

A

, O

B

output

OA, O

B

complementary output (active LOW)

C

TC A

, C

TC B

external capacitor connections

(1)

RC

TC A

,

external capacitor/ resistor connections

RC

TC B

Fig.2 Pinning diagram.

January 1995 3

Philips Semiconductors Product specification

Dual monostable multivibrator

HEF4528B

MSI

Fig.3 Logic diagram (one monostable multivibrator).

January 1995 4

Philips Semiconductors Product specification

Dual monostable multivibrator

HEF4528B

MSI

FUNCTION TABLE

Notes

1. H = HIGH state (the more positive voltage)

2. L = LOW state (the less positive voltage)

3. X = state is immaterial

4. = positive-going transition

5. = negative-going transition

6. = positive or negative output pulse; width is determined by Ctand R

t

AC CHARACTERISTICS

V

SS

=0V; T

amb

=25°C; CL= 50 pF; input transition times ≤ 20 ns

INPUTS OUTPUTS

I

0

I

1

C

D

O O

LH
HH
XXLLH

V

DD

V

SYMBOL MIN. TYP. MAX.

TYPICAL EXTRAPOLA TION

FORMULA

Propagation delays

I0, I1→ O 5 140 280 ns 113 ns + (0,55 ns/pF) C

L

HIGH to LOW 10 t

PHL

50 100 ns 39 ns + (0,23 ns/pF) C

L

15 35 70 ns 27 ns + (0,16 ns/pF) C

L

I0, I1→ O 5 155 305 ns 128 ns + (0,55 ns/pF) C

L

LOW to HIGH 10 t

PLH

60 115 ns 49 ns + (0,23 ns/pF) C

L

15 40 80 ns 32 ns + (0,16 ns/pF) C

L

CD→ O 5 105 210 ns 78 ns + (0,55 ns/pF) C

L

HIGH to LOW 10 t

PHL

40 85 ns 29 ns + (0,23 ns/pF) C

L

15 30 60 ns 22 ns + (0,16 ns/pF) C

L

CD→ O 5 120 240 ns 93 ns + (0,55 ns/pF) C

L

LOW to HIGH 10 t

PLH

50 105 ns 39 ns + (0,23 ns/pF) C

L

15 35 70 ns 27 ns + (0,16 ns/pF) C

L

Output transition 5 60 120 ns 10 ns + (1,0 ns/pF) C

L

times 10 t

THL

30 60 ns 9 ns + (0,42 ns/pF) C

L

HIGH to LOW 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

January 1995 5

Philips Semiconductors Product specification

Dual monostable multivibrator

HEF4528B

MSI

AC CHARACTERISTICS

V

SS

= 0 V; T

amb

=25°C; input transition times≤ 20 ns; Rt=5kΩ;Ct=15pF

AC CHARACTERISTICS

V

SS

=0V; T

amb

=25°C; CL= 50 pF; input transition times ≤ 20 ns; see also waveforms Fig.5.

V

DD

V

TYPICAL FORMULA FOR P (µW)

Dynamic power 5 4000 f

i

+∑(foCL) × V

DD

2

where

dissipation per 10 20 000 f

i

+∑(foCL) × V

DD

2

fi= input freq. (MHz)

package (P) 15 59 000 f

i

+∑(foCL) × V

DD

2

fo= output freq. (MHz)
C

L

= load capacitance (pF)

∑ (f

oCL

) = sum of outputs

V

DD

= supply voltage (V)

V

DD

V

SYMBOL MIN. TYP. MAX.

Recovery time 5 0 −75 ns

for C

D

10 t

RCD

0 −30 ns

15 0 −25 ns

Minimum

I

0

55025ns

pulse width; LOW 10 t

WI0L

30 15 ns

15 20 10 ns

Minimum I

1

55025ns

pulse width; HIGH 10 t

WI1H

30 15 ns

15 20 10 ns

Minimum

C

D

56030ns

pulse width; LOW 10 t

WCDL

35 15 ns

15 25 10 ns

Set-up time 5 0 −105 ns

to avoid change
in output

CD→ I0or I

1

10 t

su

0 −40 ns

15 0 −25 ns

Output O pulse 5 − 235 ns

note 1width; HIGH 10 t

WOH

− 155 ns

15 − 140 ns

Output O pulse 5 − 5,45 µs

note 2width; HIGH 10 t

WOH

− 4,95 µs

15 − 4,85 µs

Change in output O 5 −±3%

note 3pulse width over 10 ∆t

WO

−±2%

temperature 15 −±2%

Change in output O 5 −±2%

V

DD

± 5%pulse width over 10 ∆t

WO

−±1%

V

DD

15 −±1%

January 1995 6

Philips Semiconductors Product specification

Dual monostable multivibrator

HEF4528B

MSI

Notes

1. Rt=5kΩ;Ct= 15 pF; for other Rt,Ctcombinations and Ct< 0,01 µF see graph Fig.4.

2. Rt=10kΩ;Ct= 1000 pF; for other Rt,Ctcombinations and Ct> 0,01 µF use formula tWO= K.Rt.Ct.
where: tWO= output pulse width (s)

Rt= external timing resistor (Ω)

Ct= external timing capacitor (F)
K = 0,42 for VDD=5V

K = 0,32 for VDD=10V
K = 0,30 for VDD=15V

3. T

amb

= −40 to +85 °C; ∆tWOis referenced to tWOat T

amb

=25°C.

External timing 5 5 − 2000 kΩ

resistor 10 R

t

5 − 2000 kΩ

15 5 − 2000 kΩ

External timing 5 no limits

capacitor 10 C

t

no limits

15 no limits

V

DD

V

SYMBOL MIN. TYP. MAX.

January 1995 7

Philips Semiconductors Product specification

Dual monostable multivibrator

HEF4528B

MSI

Fig.4 Output pulse width (tWO) as a function of external timing capacitor (Ct).

January 1995 8

Philips Semiconductors Product specification

Dual monostable multivibrator

HEF4528B

MSI

APPLICATION INFORMATION

An example of an application for the HEF4528B is:

• Non-retriggerable monostable multivibrator

Fig.5 Waveforms showing minimum I0, I1 and O pulse widths, set-up and recovery times. Set-up and recovery

times are shown as positive values but may be specified as negative values.

Fig.6 Two examples for a non-retriggerable monostable multivibrator using half of HEF4528B (LOW to HIGH

and HIGH to LOW triggered).