LTC1391
TYPICAL PERFOR A CE CHARACTERISTICS
Driver Output High Voltage
vs Output Current
0
–0.5
OUTPUT CURRENT (mA)
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
2.0
2.5
3.0
3.5
4.0
OUTPUT VOLTAGE (V)
T
A
=25°C
4.5
5.0
1391 G04
V
+
= 2.7V
V
–
= 0V
OUTPUT VOLTAGE (V)
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 D
IN
to D
OUT
.
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 D
IN
to D
OUT
. A logic low on this input puts
D
OUT
into three-state and enables the selected channel for
analog signal transmission.
D
IN
(Pin 12):
Digital Input (TTL/CMOS Compatible). Input
for the channel selection bits.
D
OUT
(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.
U W
Driver Output High Voltage
vs Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–40
–20
40
60
0
20
TEMPERATURE (°C)
80
1391 G05
V
+
= 5V
V
–
= –5V
I
O
= 1.6mA
V
+
= 5V
V
–
= –5V
V
+
= 2.7V
V
–
= 0V
I
O
= 400µA
U
U
U
sn1391 1391fas
5
LINER [ LINEAR TECHNOLOGY ]
