DUAL MONOSTABLE MULTIVIBRATOR

HCC4538B

HCF4538B

September 1988

DUAL MONOSTABLE MULTIVIBRATOR

(Plastic Package)

DESCRIPTION

ORDER CODES :

HCC4538BF

HCF4538BM1

HCF4538BEY

HCF4538BC1

(Ceramic Package)

(Micro Package)

(Chip Carrier)

PIN CONNECTIONS

The HCC4538B (extended temperature range) and

HCF4538B (intermediate temperature range) are

monolithic integrated circuit, available in 16-lead

dual in-line plastic or-ceramic package and plastic

micro package. The HCC/HCF4538B dual precision

monostable multivibrator provides stable retrigger-

able/resettable one-shot operation for any fixed-

voltage timing application. An external resistor (R

)

and an external capacitor (C

) control the timing and

accuracy for the circuit. Adjustment of R

and C

provides a wide range of output pulse widths from

the Q and Q terminals. The time delay from trigger

input to output transition (trigger propagation delay)

and the time delay from reset input to output transi-

tion (reset propagation delay) are independent of R

and C

. Precision control of output pulse widths is

achieved through linear CMOS techniques. Lead-

ing-edge-triggering (+ TR) and trailing-edge-trigger-

ing (– TR) inputs are provided for triggering from

either edge of an input pulse. An unused + TR input

should be tied to V

. An unused – TR input should

be tied to V

. A RESET (on low level) is provided

for immediate termination of the output pulse or to

RETRIGGERABLE/RESETTABLE

CAPABILITY

TRIGGER AND RESET PROPAGATION DE-

LAYS INDEPENDENT OF R

, C

TRIGGERING FROM LEADING OR TRAILING

EDGE

Q AND Q BUFFERED OUTPUTS AVAILABLE

SEPARATE RESETS

WIDE RANGE OF OUTPUT-PULSE WIDTHS

QUIESCENT CURRENT SPECIFIED TO 20V

FOR HCC DEVICE

5V, 10V, AND 15V PARAMETRIC RATINGS

SCHMITT TRIGGER INPUT ALLOWS UN-

LIMITER RISE AND FALL TIMES ON + TR AND

– TR INPUTS

INPUT CURRENT OF 100nA AT 18V AND 25

FOR HCC DEVICE

100% TESTED FOR QUIESCENT CURRENT

MEETS ALL REQUIREMENTS OF JEDEC TEN-

TATIVE STANDARD N

13A, ”STANDARD SPE-

CIFICATIONS FOR DESCRIPTION OF ”B”

SERIES CMOS DEVICES”

1/14

FUNCTIONAL DIAGRAM

ABSOLUTE MAXIMUM RATING

Symbol

Parameter

Value

Unit

Supply Voltage: HCC Types

HCF Types

-0.5 to +20

-0.5 to +18

Input Voltage

-0.5 to V

+ 0.5

DC Input Current (any one input)

tot

Total Power Dissipation (per package)

Dissipation per Output Transistor

for Top = Full Package Temperature Range

200

100

Operating Temperature: HCC Types

HCF Types

-55 to +125

-40 to +85

stg

Storage Temperature

-65 to +150

Stresses above those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress ratingonly and functional

operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure

to absolute maximum rating conditions for external periods may affect device reliability.

* All voltage values are referred to V

pin voltage.

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Value

Unit

Supply Voltage: HCC Types

HCF Types

3 to 18

3 to 15

Input Voltage

0 to V

Operating Temperature: HCC Types

HCF Types

-55 to +125

-40 to +85

prevent output pulses when power is turned on. An

unused RESET input should be tied to V

. How-

ever, if an entire section of the HCC/HCF4538B is

not used, its inputs must be tied to either V

or V

(see table 1). In normal operation the circuit triggers

(extends the output pulse one period) on the appli-

cation of each new trigger pulse. For operation in the

non-retriggerable mode, Q is connected to – TR

when leading-edge triggering (+ TR) is used or Q is

connected to + TR when trailingedge triggering (–

TR) is used. The time period (T) for this multivibrator

can be calculated by : T = R

. The min. value of

external resistance, R

, is 4K

Ω

. The max. and min.

values of external capacitance, C

, are 100

F and

5nF, respectively.

HCC/HCF4538B

2/14

Notes : 1. A Retriggerable one-shot multivibrator has an output pulse width which is extended on full time period (T) after application of the last

trigger pulse.

2. A Non-retriggerable one-shot multivibrator has a time period (T) referenced from the application of the first trigger pulse.

LOGIC DIAGRAM (1/2 of device shown)

TABLE 1: Functional Terminal Connections

Function

to Term. NO

Input Pulse to

Term. No

Other

Connections

Mono

(1)

Mono

(2)

Mono

(1)

Mono

(2)

Mono

(1)

Mono

(2)

Mono

(1)

Mono

(2)

Leading-Edge

Trigger/Retriggerable

3, 5

11, 13

Leading-Edge

Trigger/Non-retriggerable

5, 7

11, 9

Trailing-Edge

Trigger/Retriggerable

Trailing-Edge

Trigger/Non-retriggerable

4, 6

12, 10

Pulse Width

HCC/HCF4538B

3/14

STATIC ELECTRICAL CHARACTERISTICS (over recommended operating conditions)

Symbol

Parameter

Test Conditios

Value

Unit

(V)

(

(V)

LOW

HIGH

Min.

Max.

Min.

Typ.

Max.

Min.

Max.

Quiescent

Current

HCC

Types

0/5

0.04

150

0/10

0.04

300

0/15

0.04

600

0/20

100

0.08

100

3000

HCF

Types

0/5

0.04

150

0/10

0.04

300

0/15

0.04

600

Output High

Voltage

0/5

< 1

4.95

0/10

< 1

9.95

0/15

< 1

14.95

Output Low

Voltage

5/0

< 1

0.05

10/0

< 1

0.05

15/0

< 1

0.05

Input High

Voltage

0.5/4.5

< 1

3.5

1/9

< 1

1.5/13.5

< 1

Input Low

Voltage

4.5/0.5

< 1

1.5

9/1

< 1

13.5/1.5

< 1

Output

Drive

Current

HCC

Types

0/5

2.5

-2

-1.6

-3.2

-1.15

0/5

4.6

-0.64

-0.51

-1

-0.36

0/10

9.5

-1.6

-1.3

-2.6

-0.9

0/15

13.5

-4.2

-3.4

-6.8

-2.4

HCF

Types

0/5

2.5

-1.8

-1.6

-3.2

-1.3

0/5

4.6

-0.61

-0.51

-1

-0.42

0/10

9.5

-1.5

-1.3

-2.6

-1.1

0/15

13.5

-4

-3.4

-6.8

-2.8

Output

Sink

Current

HCC

Types

0/5

0.4

0.64

0.51

0.36

0/10

0.5

1.6

1.3

2.6

0.9

0/15

1.5

4.2

3.4

6.8

2.4

HCF

Types

0/5

0.4

0.61

0.51

0.42

0/10

0.5

1.5

1.3

2.6

1.1

0/15

1.5

3.6

3.4

6.8

2.8

, I

Input Leakage

Current

0/18

Any Input

0.1

-5

0.1

Input Capacitance

Any Input

7.5

* T

LOW

= -55

C for HCC device: -40

C for HCF device.

* T

HIGH

= +125

C for HCC device: +85

C for HCF device.

The Noise Margin for both ”1” and ”0” level is: 1V min. with V

= 5 V, 2 V min. with V

= 10 V, 2.5 V min. with V

= 15 V

HCC/HCF4538B

4/14

DYNAMIC ELECTRICAL CHARACTERISTICS (T

amb

= 25

C, C

= 50 pF, R

= 200 K

Ω

typical temperature coefficent for all V

values is 03 %/

C, all input rise and fall times= 20 ns)

Symbol

Parameter

Test Conditions

Value

Unit

(V)

Min.

Typ.

Max.

TLH

THL

Transition Time

100

200

100

PLH

PHL

Propagation Delay Time

+TR or -TR to Q or Q

300

600

150

300

100

220

PLH

PHL

Propagation Delay Time

Reset to Q or Q

= 1K

Ω

250

500

125

250

190

Minimum Input Pulse Width

+TR, -TR or Reset

= 1K

Ω

140

Output Pulse Width - Q or Q

= 0.005

F, R

= 10 K

Ω

60.6

64.5

58.9

63.0

59.1

63.5

Output Pulse Width - Q or Q

= 0.1

F, R

= 100 K

Ω

)

9.4

9.97

10.5

9.4

9.95

10.6

9.5

10.00

10.6

Output Pulse Width - Q or Q

= 10

F, R

= 100 K

Ω

)

0.95

1.00

1.06

0.95

1.00

1.06

0.96

1.00

1.07

Pulse Width Match Between

Circuits in Same Package:

100

(

−

)

= 0.1

F, R

= 100 K

Ω

)

Minimum Retrigger Time

Input Capacitance

Any

Input

7.5

* Minimum R

value = 4 K

Ω

, minimum C

value = 500 pF

HCC/HCF4538B

5/14

Power Down Mode

During a rapid power-down conditiona, as would

occur with a power supply short circuit or with a

poorly filtered power supply, the energy stored in C

could discharge into Pin 2 or 14. To Avoid possible

device damage in this mode, when C

≤

0.5 micro-

farad, a aprotection diode with a 1 Ampere or higher

rating (1N5395 or equivalent) and a separate

ground return for C

should be provided as shown

in Fig. 1

An alternate protection method is shown in Fig. 2,

where a 51

Ω

current limit resistor is inserted in

series with CX. Note that a small pulse width de-

crease will occour however, and RX must be appro-

priately increased to obtain the originally desired

pulse width.

Figure 1: rapid Power Down Protection Circuit

Figure 2: Alternate rapid Power Down Protection

Circuit

HCC/HCF4538B

8/14

SO16 (Narrow) MECHANICAL DATA

DIM.

inch

MIN.

TYP.

MAX.

MIN.

TYP.

MAX.

1.75

0.068

0.1

0.2

0.004

0.007

1.65

0.064

0.35

0.46

0.013

0.018

0.19

0.25

0.007

0.010

0.5

0.019

(typ.)

9.8

0.385

0.393

5.8

6.2

0.228

0.244

1.27

0.050

8.89

0.350

3.8

4.0

0.149

0.157

4.6

5.3

0.181

0.208

0.5

1.27

0.019

0.050

0.62

0.024

(max.)

P013H

HCC/HCF4538B

12/14

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the

consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No

license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned

in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.

SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express

written approval of SGS-THOMSON Microelectonics.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -

Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A

HCC/HCF4538B

14/14