Datasheet

TLC542C, TLC542I
8-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 INPUTS
SLAS075C – FEBRUARY 1989 – REVISED JUNE 2001
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
operating sequence
MSB LSB
Don’t Care Don’t Care
MSB LSB
t
c(1)
(see Note A)
Hi-Z
State
Hi-Z State
Access
Cycle C
Access
Cycle B
Previous Conversion Data A Conversion Data B
MSB
LSB
MSB LSB
(see Note B)
B7 B6 B5 B4 B3 B2 B1 B0A7 A6 A5 A4 A3 A2 A1 A0
B3 B2 B1 B0 C3 C2 C1 C0
1 2345678 1 2345678
I/O
CLOCK
ADDRESS
INPUT
DATA
OUT
CS
EOC
12 Internal System Clocks ≤ 12 µs
t
su(CS)
t
su(A)
t
acq
t
(acq)
t
d(I/O–EOC)
t
d(EOC–DATA)
t
c(2)
See Note B
Don’t Care
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 t
su(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).