Precision Timer. HA17555 Datasheet

HA17555 Timer. Datasheet pdf. Equivalent

HA17555 Datasheet
Recommendation HA17555 Datasheet
Part HA17555
Description Precision Timer
Feature HA17555; HA17555 Series Precision Timer ADE-204-064 (Z) Rev. 0 Dec. 2000 Description HA17555 Series are ICs .
Manufacture Hitachi Semiconductor
Datasheet
Download HA17555 Datasheet




Hitachi Semiconductor HA17555
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
Industrial use
Commercial use
Type No.
HA17555PS
HA17555FP
HA17555
HA17555F
Package
DP-8
FP-8D
DP-8
FP-8D



Hitachi Semiconductor HA17555
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
GND 1
Trigger 2
Output 3
Reset 4
8 VCC
7 Discharge
6 Threshold
5 Control Voltage
Pin Description
Pin No.
1
2
3
4
5
6
7
8
Function
Ground pin
Trigger pin
Output pin
Reset pin
Control voltage pin
Threshold pin
Discharge pin
VCC pin
(Top View)
2



Hitachi Semiconductor HA17555
Circuit Schematic
HA17555 Series
Control
Voltage
R1 R2 R3 R4
Q5 Q6 Q7 Q8 Q9
R7
Threshold
Trigger
Q1
Q2
Q4
Q3
R8
Q11 Q12
Q10 Q13
R12
Q21
Q19 Q22
R13
Q23
Q20
Q18
R11
R16
Q16 Q17
R14
Q24
R15
Q14
VCC
Output
Discharge
Reset
R5 R6
R9
Q15
Q25
GND
Block Diagram
VCC
Threshold
Control
Trigger
R
SQ
CLR
Output
Discharge
Reset
3







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