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NTE1738 Integrated Circuit TV Remote Control Receiver
Description: The NTE1738 is a 29-function remote-control receiver circuit manufactured by aluminum-gate CMOS technology for use in television receivers, audio equipment, and the like using infrared for transmission. It enables direct control of 12 functions at the receiver. Features: D Single Power Supply D Wide Supply Voltage Range: 8V to 14V D Low Power Dissipation D On-Chip Oscillator D Low-Cost LC or Ceramic Oscillator used in Determining Reference Frequency (480kHz or 455kHz) D Information is Transmitted by Pulse Code Modulation D Good Noise Immunity-Instructions are not Executed unless the Same Code is Received Three or more Times in Succession D Single Transmission Frequency (40kHz or 38kHz) for Carrier Wave D 16 TV Channels Selected Directly D Three Analog Functions -- Volume, Brightness and Color Saturation -- are Independently Controlled to 64 Stages by Three 6-Bit D/A Converters. D 12 Instructions are Controlled at the NTE1738 Receiver, as well. D Has Large Tolerance in Operating Frequency between the Transmitter and the Receiver Application: D Remote-Control Receiver for TV or other Applications Function: The NTE1738 is designed to decode and execute instructions after three successive receptions of the identical instruction code, providing a good noise immunity. Instructions comprise direct selection of 16 channels, channel position high and low, color saturation high and low, normalization of volume, brightness and color saturation, sound mute on and off, TV main power on and off, and output CALL on and off. In addition, 12 functional instructions can be entered from the receiver. Absolute Maximum Ratings: Supply Voltage (With respect to VSS), VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 15V Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS VI VDD Output Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS VO VDD Maximum Power Dissipation (TA = +25C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mW Operating Free-Air Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +126C
Recommended Operating Conditions:
Parameter Supply Voltage Oscillation Frequency Input Voltage, SI Symbol VDD fOSC VI Test Conditions Min 8 - - 5 Typ 12 455 480 - Max 14 - - - Unit V kHz kHz VP-P
Electrical Characteristics: (TA = +25C, VDD = 12V unless otherwise specified)
Parameter Supply Voltage Supply Current Pull-Up Resistance I1 to I3 Low Level Output Currents FA to FD Low Level Output Currents CH UP, CH DOWN, CH RESET Off-State Output Currents CH UP, CH DOWN, CH RESET Low Level Output Currents P0 to P3 Off-State Output Currents P0 to P3 High Level Output Currents VO, BR, CS Low Level Output Currents VO, BR, CS High Level Output Currents POWER ON/OFF, CALL MUTE Low Level Output Currents POWER ON/OFF, CALL MUTE High Level Output Current IR Low Level Output Current IR Symbol VDD IDD RI IOL IOL IOZH IOL IOZH IOH IOL IOH IOL IOH IOL VO = 12V VO = 12V VO = 12V VO = 12V VO = 12V VO = 0V VO = 12V VO = 0V VO = 12V VO = 0V VO = 12V Test Conditions TA = -30 to +70C, fOSC = 455kHz fOSC = 455kHz Min Typ Max Unit 8 - - 5 20 - 20 - -7 7 -20 5 -15 5 12 2 20 - - - - - - - - - - - 14 5 - - - 1 - 1 - - - - - - V mA k mA mA A mA A mA mA mA mA mA mA
Pin Connection Diagram
Power ON Input (0V) VSS Transmission Signal Input Automatic Clear Input Key Input I1 Key Input I2 Key Input I3 Scanner Output FA Scanner Output FB Scanner Output FC Scanner Output FD OSC Input OSC Output VDD
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
Reception Indication Output CH RESET CH UP CH RUN Channel Control Output P0 Channel Control Output P1 Channel Control Output P2 Channel Control Output P3 Power ON/OFF Control Output Call Control Output Sound Mute Indication Output D/A Output VO D/A Output BR D/A Output CS
14
1
15
28
1.469 (37.32) Max
.540 (13.7)
.250 (6.35)
.100 (2.54) 1.300 (33.02) .122 (3.1) Min .600 (15.24)

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