Datasheet

6
LTC2847
sn2847 2847fs
UU
U
PI FU CTIO S
NC (Pins 1,3,18,19,22,23): No Connect.
V
DD
(Pin 2): Generated Positive Supply Voltage for
V.28. Connect a 1µF capacitor to ground.
V
CC
(Pin 4): Input Supply Pin. Input supply to charge
pump and transceiver. 4.75V ≤ V
CC
≤ 5.25V. Connect a
1µF capacitor to GND.
D1 (Pin 5): TTL Level Driver 1 Input.
D2 (Pin 6): TTL Level Driver 2 Input.
D3 (Pin 7): TTL Level Driver 3 Input.
R1 (Pin 8): CMOS Level Receiver 1 Output with Pull-Up to
V
IN
when Three-Stated.
R2 (Pin 9): CMOS Level Receiver 2 Output with Pull-Up to
V
IN
when Three-Stated.
R3 (Pin 10): CMOS Level Receiver 3 Output with Pull-Up
to V
IN
when Three-Stated.
M0 (Pin 11): TTL Level Mode Select Input 0 with Pull-Up
to V
IN
. See Table 1.
M1 (Pin 12): TTL Level Mode Select Input 1 with Pull-Up
to V
IN
. See Table 1.
V
IN
(Pin 13): Input Supply Pin. Input supply to digital
interface including receiver output drivers. 3V ≤ V
IN
≤
5.25V. Connect to V
CC
(Pin 4) or to separate supply for
lower receiver output swing. Connect a 1µF capacitor to
GND.
M2 (Pin 14): TTL Level Mode Select Input 2 with Pull-Up
to V
IN
. See Table 1.
DCE/DTE (Pin 15): TTL Level Mode Select Input with
Pull-Up to V
IN
. See Table 1.
R3 B (Pin 16): Receiver 3 Noninverting Input.
R3 A (Pin 17): Receiver 3 Inverting Input.
R2 B (Pin 20): Receiver 2 Noninverting Input.
R2 A (Pin 21): Receiver 2 Inverting Input.
D3/R1 B (Pin 24): Receiver 1 Noninverting Input and
Driver 3 Noninverting Output.
D3/R1 A (Pin 25): Receiver 1 Inverting Input and Driver 3
Inverting Output.
D2 B (Pin 26): Driver 2 Noninverting Output.
D2 A (Pin 27): Driver 2 Inverting Output.
D1 B (Pin 28): Driver 1 Noninverting Output.
D1 A (Pin 29): Driver 1 Inverting Output.
GND (Pins 30,31): Transceiver Ground.
V
EE
(Pins 32,33,36): Generated Negative Supply Voltage.
Connect a 3.3µF capacitor to GND. Exposed pad can also
be connected to V
EE
.
C2
–
(Pin 34): Capacitor C2 Negative Terminal. Connect a
1µF capacitor between C2
+
and C2
–
.
C2
+
(Pin 35): Capacitor C2 Positive Terminal. Connect a
1µF capacitor between C2
+
and C2
–
.
C1
–
(Pin 37): Capacitor C1 Negative Terminal. Connect a
1µF capacitor between C1
+
and C1
–
.
C1
+
(Pin 38): Capacitor C1 Positive Terminal. Connect a
1µF capacitor between C1
+
and C1
–
.