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LT1045CN
LTC1045 Programmable Micropower Hex Translator/ Receiver/Driver U FEATURES s s s s s s s s DESCRIPTIO Efficiently Translate Voltage Levels Internal Hysteresis for Noise Immunity Output Latches Included Three-State Outputs Programmable Power/Speed Power Can Be Completely Shut Off ±50V on Inputs with External 100k Limit Resistor 1.2µs Response at 100µA Supply Current U APPLICATIO S s s s s TTL/CMOS to ±5V Analog Switch Drive TTL to CMOS (3V to 15V VCC) ECL to CMOS (3V to 15V VCC) Ground Isolation Buffer Low Power RS232 Line Receiver The ISET pin has several functions. When taken to V + the outputs are latched and power is completely shut off. Power/speed can be programmed by connecting ISET to V – through an external resistor. , LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS is a trademark of Linear Technology Corporation. U s The LTC®1045 is a hex level translator manufactured using Linear Technology’s enhanced LTCMOSTM silicon gate process. It consists of six high speed comparators with output latches and three-state capability. Each comparator’s plus input is brought out separately. The minus inputs of comparators 1 to 4 are tied to VTRIP1 while 5 and 6 are tied to VTRIP2. TYPICAL APPLICATIO 5V Flat Ribbon Cable Driver/Receiver 5V 20 TTL IN XMT IN V+ + 1 VOH 20 VOL 1.4V – ISET V– DIS 13 XMT OUT 66-FT FLAT RIBBON CABLE RCV IN V+ + 1 VOH ZO = 150Ω 11 150Ω ADJACENT CONDUCTORS VOL 12 10 0.5V – ISET V– 10 DIS 13 RCV OUT TTL OUT 11 12 1045 TA01 XMT IN (5V/DIV) XMT OUT (1V/DIV) RCV IN (1V/DIV) RCV OUT (5V/DIV) 100ns/DIV 045 TA01a 1045fc 1
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