TLC542C_14 Datasheet, PDF (3/13 Pages) Texas Instruments – 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 INPUTS

operating sequence
I/O
CLOCK
tsu(A)
tsu(CS)
CS
1 2 3 4 56 7 8
Access
Cycle B
(see Note A)
tacq
TLC542C, TLC542I
8-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 INPUTS
SLAS075C – FEBRUARY 1989 – REVISED JUNE 2001
1 2 3 4 56 7 8
Don’t Care
tc(1)
Access
Cycle C
12 Internal System Clocks ≤ 12 µs
t(acq)
ADDRESS
INPUT
DATA
OUT
EOC
MSB
LSB
B3 B2 B1 B0
Don’t Care
A7
A6 A5 A4 A3 A2 A1 A0
Previous Conversion Data A
MSB
(see Note B)
LSB
td(I/O_–EOC)
Hi-Z State
See Note B
td(EOC_–DATA)
tc(2)
MSB
LSB
C3 C2 C1 C0
Don’t Care
B7 B6 B5 B4 B3 B2 B1 B0
MSB
Conversion Data B
LSB
Hi-Z
State
NOTES: A. To minimize errors caused by noise at the chip select input, the internal circuitry waits for two rising edges and one falling edge
of the internal system clock after CS↓ before responding to control input signals. The CS setup time is given by the tsu(CS)
specifications. Therefore, no attempt should be made to clock-in an address until the minimum chip select setup time has elapsed.
B. The output becomes 3-state on CS going high or on the negative edge of the eighth I/O clock.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)^†
Supply voltage, V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V
Input voltage range (any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to V_CC + 0.3 V
Output voltage range, V_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to V_CC + 0.3 V
Peak input current range (any input), I_p-p) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Peak total input current (all inputs), I_P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30 mA
Operating free-air temperature range: TLC542C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
TLC542l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Case temperature for 10 seconds, T_C: 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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