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TLC541IFN Datasheet(PDF) 3 Page - Texas Instruments |
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TLC541IFN Datasheet(HTML) 3 Page - Texas Instruments |
3 / 19 page TLC540I, TLC541I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 INPUTS SLAS065B – OCTOBER 1983 – REVISED JUNE 2001 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 operating sequence ADDRESS INPUT Hi-Z B7 B0 B1 B2 B3 B4 B5 B6 B7 C3 C2 C1 C0 LSB MSB Conversion Data B MSB MSB LSB Hi-Z State Don’t Care MSB LSB MSB (See Note B) A7 A7 A6 A5 A4 A3 A2 A1 A0 State LSB B0 B1 B2 MSB B3 Don’t Care 1 1 Sample Cycle C Access Cycle C See Note A tconv Sample Cycle B Access Cycle B (see Note C) 88 7 6 5 4 3 2 7 6 5 4 3 2 I/O CLOCK CS DATA OUT Don’t Care twH(CS) Previous Conversion Data A NOTES: A. The conversion cycle, which requires 36 system clock periods, is initiated on the 8th falling edge of I/O CLOCK after CS goes low for the channel whose address exists in memory at that time. If CS is kept low during conversion, I/O CLOCK must remain low for at least 36 system clock cycles to allow conversion to be completed. B. The most significant bit (MSB) will automatically be placed on the DATA OUT bus after CS is brought low. The remaining seven bits (A6 – A0) will be clocked out on the first seven I/O CLOCK falling edges. C. To minimize errors caused by noise at CS, the internal circuitry waits for three system clock cycles (or less) after a chip select falling edge is detected before responding to control input signals. Therefore, no attempt should be made to clock-in address data until the minimum chip-select setup time has elapsed. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) 6.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, VI (any input) – 0.3 V to VCC +0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage range, VO – 0.3 V to VCC +0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peak input current range (any input) ±10 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peak total input current (all inputs) ±30 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA: TLC540I, TLC541I – 40 °C to 85°C . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg – 65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Case temperature for 10 seconds: FN package 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: DW or N package 260 °C . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to digital ground with REF– and GND wired together (unless otherwise noted). |
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