SL490B Datasheet PDF | GEC PLESSEY

GEC PLESSEY SL490B

The SL490B is an easily extendable, 32-command PPM transmitter drawing negligible standby current. 5 shows the circuit for a simple infra-red transmitter where the PPM output pulses from pin 2 of the SL490B are differentated by C3 and R3 and amplified by TR1 to produce current pulses about 15µs wide.These pulses are further amplified by TR2 and applied to the infra-red diodes D1 and D2.

Part No.	SL490B
Datasheet	SL490B Download
Manufacturer	GEC PLESSEY
Description	REMOTE CONTROL TRANSMITTER
Buy	Stock & Price

FEATURES

s Ultrasonic or Infra-Red Transmission s Direct Drive or Ultrasonic Transducer s Direct Drive of Visible LED when using Infra-Red s Very Low Power Requirements s Pulse Position Modulation gives Excellent Immunity from Noise and Multipath Reflections s Single Pole Key Matrix s Switch Resistance up to 1kΩ Tolerated s Low External Component Count s On-Chip Anti-Bounce Circuitry

ABSOLUTE MAXIMUM RATINGS

Supply voltage, VCC Total power dissipation Operating temperature range Storage temperature range 19●5V 600mW 210°C to 160°C 255°C to1150°C 0V AND XXX00 1 18 CARRIER TIME CONSTANT  OUTPUT   VCC (19V)  000XX SELECTION   001XX MATRIX CURRENT SOURCES    010XX 011XX  100XX 2 17 3 16 4 15 SL490B 5 14 6 13 7 12 8 11 9 10 REGULATED VOLTAGE, VREG PPM TIME CONSTANT XXX01 XXX10 XXX11 SELECTION MATRIX CURRENT SINKS 111XX 110XX 101XX SELECTION MATRIX CURRENT SOURCES DP18 Fig. 1 Pin connections - top view QUICK REFERENCE DATA s Power Supply: 9V Standby 6µA, Operating 8mA s Modulation:...