HA17555
HA17555 is Precision Timer manufactured by Renesas.
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 ponents is fewer. Further, it’s patible with NE555 of singnetics.
Features
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- - 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 200m A. 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 mercial use Type No. HA17555PS HA17555FP HA17555 HA17555F Package Code (Previous Code) PRDP0008AF-A (DP-8B) PRSP0008DE-B (FP-8DGV) PRDP0008AF-A (DP-8B) PRSP0008DE-B (FP-8DGV)
Applications
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- Delay Time Generator (Mono Multi Vibrator) Pulse Generator (Astable Multi Vibrator) Pulse Width Modulator Pulse Location Modulator Miss Pulse Detector
Pin Arrangement
GND Trigger Output Reset
1 2 3 4
8 7 6 5
VCC Discharge Threshold Control Voltage
(Top View)
Rev.1.00 Jun 15, 2005 page 1 of 7
HA17555 Series
Pin Description
Pin No.
.. 1
Function Ground pin Trigger pin Output pin Reset pin Control voltage pin Threshold pin Discharge pin VCC pin
2 3 4 5 6 7 8
Circuit Schematic
Control Voltage VCC R1 Q5 R2 Q6 Q7 R3 Q8 Q9 R7 R4 Q19 R13 Q23 Threshold Q1 Q2 Q3 Q18 R8 R11 Q11 Q12 Trigger R5 Q10 Q13 Q16 Q17 R16 R15 Q14 Q4 Q20 R14 Q24 Discharge Output R12 Q21 Q22
R6 R9
Q15 GND
Reset
Q25
Block Diagram
Threshold Control
Trigger
S CLR
Output...