LTC2844 datasheet(6/20 Pages) LINER

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LTC2844

sn2844 2844fs

PI FU CTIO S

VCC (Pin 1): Positive Supply for the Transceivers. Connect

to VCC Pin 8 on LTC2846 or to 5V supply. Connect a 1µF

capacitor to ground.

VDD (Pin 2): Positive Supply Voltage for V.28. Connect to

VDD Pin 7 on LTC2846 or 8V supply. Connect a 1µF

capacitor to ground.

D1 (Pin 3): TTL Level Driver 1 Input.

D2 (Pin 4): TTL Level Driver 2 Input.

D3 (Pin 5): TTL Level Driver 3 Input.

R1 (Pin 6): CMOS Level Receiver 1 Output. Receiver

outputs have a weak pull up to VIN when high impedance.

R2 (Pin 7): CMOS Level Receiver 2 Output.

R3 (Pin 8): CMOS Level Receiver 3 Output.

D4 (Pin 9): TTL Level Driver 4 Input.

R4 (Pin 10): CMOS Level Receiver 4 Output.

M0 (Pin 11): TTL Level Mode Select Input 0. Mode select

inputs pull up to VIN.

M1 (Pin 12): TTL Level Mode Select Input 1.

M2 (Pin 13): TTL Level Mode Select Input 2.

DCE/DTE (Pin 14): TTL Level Mode Select Input.

VIN (Pin 15): Positive Supply for the Receiver Outputs.

≤ VIN ≤ 3.6V. Connect a 1µF capacitor to ground.

D4/R4 A (Pin 16): Receiver 4 Inverting Input and Driver 4

Inverting Output.

R3 B (Pin 17): Receiver 3 Noninverting Input.

R3 A (Pin 18): Receiver 3 Inverting Input.

R2 B (Pin 19): Receiver 2 Noninverting Input.

R2 A (Pin 20): Receiver 2 Inverting Input.

D3/R1 B (Pin 21): Receiver 1 Noninverting Input and

Driver 3 Noninverting Output.

D3/R1 A (Pin 22): Receiver 1 Inverting Input and Driver 3

Inverting Output.

D2 B (Pin 23): Driver 2 Noninverting Output.

D2 A (Pin 24): Driver 2 Inverting Output.

D1 B (Pin 25): Driver 1 Noninverting Output.

D1 A (Pin 26): Driver 1 Inverting Output.

GND (Pin 27): Ground.

VEE (Pin 28): Negative Supply Voltage. Connect to VEE

Pin 31 on LTC2846 or to – 7V supply. Connect a 1

µF

capacitor to ground.

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