LTC1391CS datasheet(5/12 Pages) LINER

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LTC1391

sn1391 1391fas

PIN FUNCTIONS

S0, S1, S2, S3, S4, S5, S6, S7 (Pins 1, 2, 3, 4, 5, 6, 7,

8): Analog Multiplexer Inputs.

GND (Pin 9): Digital Ground. Connect to system ground.

CLK (Pin 10): System Clock (TTL/CMOS Compatible). The

clock synchronizes the channel selection bits and the

serial data transfer from DIN to DOUT.

CS (Pin 11): Channel Select Input (TTL/CMOS Compat-

ible). A logic high on this input enables the LTC1391 to

read in the channel selection bits and allows digital data

transfer from DIN to DOUT. A logic low on this input puts

DOUT into three-state and enables the selected channel for

analog signal transmission.

DIN (Pin 12): Digital Input (TTL/CMOS Compatible). Input

for the channel selection bits.

DOUT (Pin 13): Digital Output (TTL/CMOS Compatible).

Output from the internal shift register.

V – (Pin 14): Negative Supply. For

±5V dual supply appli-

cations, |V– | should not exceed |V+|by more than 20% for

proper channel selection.

D (Pin 15): Analog Multiplexer Output.

V + (Pin 16): Positive Supply.

TYPICAL PERFOR A CE CHARACTERISTICS

OUTPUT VOLTAGE (V)

2.0

2.5

3.0

4.0

3.5

4.5

5.0

1391 G04

–0.5

–1.0

–1.5

–2.0

–2.5

–3.0

–3.5

–4.0

V+ = 5V

V – = –5V

TA =25°C

V+ = 2.7V

V – = 0V

TEMPERATURE (

°C)

–40

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

1391 G05

–20

020

V+ = 5V

V – = –5V

IO = 1.6mA

V+ = 2.7V

V – = 0V

IO = 400µA

Driver Output High Voltage

vs Output Current

Driver Output High Voltage

vs Temperature

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