HA17555 (Precision timer IC )

HA17555 Series are ICs designed for accurate time delays or oscillations.HA17555 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.

Application

·  Delay Time Generator (Mono Multi Vibrator)
·  Pulse Generator (Astable Multi Vibrator)
·  Pulse Width Modulator
·  Pulse Location Modulator
·  Miss Pulse Detector

Specifications

Item	Symbol	HA17555PS/FP	HA17555/F	Unit
Supply voltage	VCC	18	18	V
Discharge current	IT	200	200	mA
Output source current	Isource	200	200	mA
Output sink current	Isink	200	200	mA
Power dissipation*1	PT	600/385	600/385	mW
Operating temperature	Topr	20 to +75	20 to +70	°C
Storage temperature	Tstg	55 to +125	55 to +125	°C

Note:
1. For the HA17555/PS, This value applies up to Ta = 50°C; at temperatures above this, 8.3mW/°C derating should be applied.
For the HA17555F/FP, This value applies up to Ta = 25°C; at temperatures above this, 3.85mW/°C derating should be applied. See notes on SOP Package Usage in Reliability section.