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NEW ** Tiny-IR-II ** NEW
8-Pin, 5-Bit, Infrared Decoder/Encoder IC's
Low-Power, low parts count, easy to build - with an operating range up to 100+', and Tiny enough to fit into very small enclosures.
No external oscillators or crystals required. Just a few common components, and you're in business with a 5-bit remote control system.
Tiny-IR-II Encoder Operation:
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Power-up: Low-Power sleep mode & wait for key-press |
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Key pressed: Wake up, transmit key value |
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Wait: For key release |
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Wait: Low-Power sleep mode & wait for next key-press |
Very tiny, very low power, very simple to use, very easy circuits to build, and very effective.
Operating frequency: 40kHz
(works with 38/40kHz detectors)
Encoder IC Power requirement: 3 to 5VDC
Operating current (idle): < 1uA @ 3 or 5VDC
Key-Press (hold): 50uA @5VDC
Range: Up to 100' (with long-range driver circuit)
The new Tiny-IR-II transmitter IC will run from 3 to 5 volts DC, and draws less than 1uA in sleep-mode while waiting for a key-press.
The infrared LED can be connected directly to the Tiny-IR-II encoder with a series limiting resistor, or an optional high-power/long-range driver can be used to increase the LED output for operating distance in excess of 100-foot.
The Tiny-IR-II transmitter uses a carrier modulated pulse-drive technique for exceptional operating distances. Press a button, data is sent. Release the button, and the transmitter goes into sleep-mode drawing less than 1uA stand-by power for long lasting battery powered applications.
8-Pin Infrared Encoder/Transmitter IC
Low-Power/Short-Range Transmitter Option
High-Power/Long-Range Transmitter Option (cap optional)
Tiny-IR-II Decoder Operation:
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Power-up: All outputs to ground |
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Wait: for synch pulse & button data |
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Synch Valid: Toggle output for key# received |
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Wait: for next data reception |
Decoder IC works with 38 & 40KHz
infrared detectors
Decoder IC Power requirement: Regulated +5VDC
Operating current (idle): < 1 mA @5VDC [No Load]
Output Operation: Latching
Output drive capacity: Source or sink 25mA per pin, 200mA total (all 5 output
pins combined).
Output pins default to logic "0" (ground) when power is first applied, and toggle & latch when a valid synch pulse & key-press data are received from the encoder IC.
Example:
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Power is first applied to decoder IC, outputs latch at logic "0" ground. |
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Data for Key #1 is received, out1 latches at logic "1" high. |
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Data for key #2 is received, out2 latches at logic "1" high. |
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Data for key #1 is received again, out1 latches at logic "0" ground. |
Each valid data reception will toggle the output pins from "0" to "1" logic states depending on the key pressed on the encoder IC input switches.
There are no address pins, and no output pins are changed until the synchronization pulse & data are received & verified.
The Tiny-IR-II decoder outputs differ dramatically from the drive outputs of decoder IC's such as the Holtek series by allowing direct control of LEDs, solid-state relays, and other small DC loads which can be driven directly by Tiny-IR-II decoder outputs.
This is quite an improvement over the standard remote control decoder ICs available on the market today, and requires much less circuitry on the receiver section for a complete remote control solution.
Tiny-IR-II Decoder CircuitNotice no external components are required except the IR detector module to use the Tiny-IR-II decoder.
Click HERE to download complete schematics for using the Tiny-IR-II encoder & decoder IC's in .pdf format.
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