HIT HA17555PS, HA17555FP, HA17555F Datasheet

HA17555 Series

Precision Timer

ADE-204-064 (Z)

Rev. 0

Dec. 2000

Description

HA17555 Series are ICs designed for accurate time delays or oscillations. It provides both of trigger
terminal and reset terminal in order to enable a wide scope of application including Mono Multi Vibrator
and Astable Multi Vibrator, and the number of external components is fewer. Further, it’s compatible with
NE555 of singnetics.

Features

• Mono multi vibrator can be constructed with one resistor and one capacitor.

• Astable multi vibrator can be constructed with two resistors and one capacitor.

• Delay time can be established widely from several µ seconds to several hours.

• Pulse Duty can be controlled.

• The maximum value of both sink current and source current is 200mA.

• Direct connection of output to TTL is possible.

• Temperature/delay time ratio is 50 ppm/°C (typ).

• Output is normally in the on and off states.

Ordering Information

Application Type No. Package

Industrial use HA17555PS DP-8

HA17555FP FP-8D

Commercial use HA17555 DP-8

HA17555F FP-8D

HA17555 Series

Applications

• Delay Time Generator (Mono Multi Vibrator)

• Pulse Generator (Astable Multi Vibrator)

• Pulse Width Modulator

• Pulse Location Modulator

• Miss Pulse Detector

Pin Arrangement

Pin Description

Pin No. Function

1 Ground pin
2 Trigger pin
3 Output pin
4 Reset pin
5 Control voltage pin
6 Threshold pin
7 Discharge pin
8V

pin

CC

GND

Trigger

Output

Reset

1
2
3
4

(Top View)

8

V

CC

Discharge

7

Threshold

6

Control Voltage

5

2

Circuit Schematic

R1 R2 R4

Q5

Threshold

Trigger

Q1

Q2

Q7 Q9Q8

Q6

Q3

R3

Q10

Q4

Q11

Control

Voltage

Q12

Q13

R7

R8

Q16

Q19

Q18

R11

Q17

R12

R16

Q20

R13

Q23

HA17555 Series

Q21

Q22

R14

Q24

R15

Q14

V

CC

Output

Discharge

Reset

Block Diagram

Threshold

Control

Trigger

R5

R

S

CLR

Reset

Q15

Q

GND

Q25

Output
Discharge

R6

R9

V

CC

3