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SL490, SL490B, SL494

Table of contents:
Info of SL490
Info of SL490B
Info of SL494

SL490, SL490B, SL494 Selling Leads, Datasheet

MFG:400 Package Cooled:SL D/C:New

SL490, SL490B, SL494 Datasheet download

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Part Number: SL490

MFG: 400

Package Cooled: SL

D/C: New

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SL490B General Description

GPS has developed and produced a range of monolithic integrated circuits which give a wide variety of remote control facilities. As well as ultrasonic or infra-red transmission, cable, radio or telephone links may also be used. Pulse Position Modulation (PPM) is used with or without carrier and automatic error detection is incorporated. Initially designed with TV remote control in mind, the device is also suitable for use in radios, tuners, tape and record decks, lamps and lighting, toys and models, industrial control and monitoring.

The SL490B is an easily extendable, 32-command PPM transmitter drawing negligible standby current.

SL490B Maximum Ratings

Supply voltage, VCC............19`5V
Total power dissipation..........600mW
Operating temperature range.210°C to 160°C
Storage temperature range..255°C to1150°C

SL490B Features

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

SL494 General Description

The SL494 incorporates on a single monolithic chip all the functions required in the construction of a pulse-width-modulation control circuit. Designed primarily for power supply control, the SL494 contains an on-chip 5-volt regulator, two error amplifiers, adjustable oscillator, dead-time control comparator, pulse-steering flip-flop, and output-control circuitry. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. Push-pull or single-ended output operation may be selected through the outputcontrol function. The architecture of the IL494 prohibits the possibility of either output being pulsed twice during push-pull operation.

SL494 Maximum Ratings

Symbol	Parameter	Value	Unit
VCC	Supply Voltage	41	V
VIN	Amplifier Input Voltage	Vcc+0.3	V
VOUT	Collector Output Voltage	41	V
	Collector Output Current	250	mW
Tstg	Storage Temperature	-65 to +150	°C

SL494 Features

· Complete PWM Power Control Circuitry
· Uncommitted Outputs for 200 mA Sink or Source
· Output Control Selects Single-Ended or Push-Pull Operation
· Internal Circuitry Prohibits Double Pulse at Either Output
· Internal Regulator Provides a Stable 5 V Reference Supply
· Variable Dead-Time Provides Control Over Total Range

SL494 Connection Diagram

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