LTC2856HMS8-1#PBF Linear Technology, LTC2856HMS8-1#PBF Datasheet - Page 10

• Manufacturer Part Number: LTC2856HMS8-1#PBF
• Description: IC TXRX RS485/RS422 8-MSOP
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC2856HMS8-1#PBF

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN FUNCTIONS
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
10
PIN NAME
GND
V
RO
RE
DE
DI
Y
Z
B
A
CC
LTC2856-1
LTC2856-2
5/9*
1
2
3
4
7
6
8
PIN NUMBER
LTC2857-1
LTC2857-2
4/9*
2
3
5
6
7
8
1
LTC2858-1
LTC2858-2
5/11*
10
1
2
3
4
6
7
8
9
DESCRIPTION
Receiver Output. If the receiver output is enabled (RE low) and A > B by 200mV,
then RO will be high. If A < B by 200mV, then RO will be low. If the receiver
inputs are open, shorted or terminated without a valid signal, RO will be high.
Receiver Enable. A low enables the receiver. A high input forces the receiver
output into a high impedance state.
Driver Enable. A high on DE enables the driver. A low input will force the driver
outputs into a high impedance. If RE is high with DE low, the part will enter a
low power shutdown state.
Driver Input. If the driver outputs are enabled (DE high), then a low on DI forces
the driver positive output low and negative output high. A high on DI, with
the driver outputs enabled, forces the driver positive output high and negative
output low.
Ground. *The Exposed Pad on the DFN packages should be connected to
ground.
Noninverting Driver Output for the LTC2857-1, LTC2857-2, LTC2858-1 and
LTC2858-2. High impedance when the driver is disabled (LTC2858-1) or
unpowered.
Inverting Driver Output for the LTC2857-1, LTC2857-2, LTC2858-1 and
LTC2858-2. High impedance when the driver is disabled (LTC2858-1) or
unpowered.
Inverting Receiver Input (and Inverting Driver Output for the LTC2856-1 and
LTC2856-2). Impedance is > 96kΩ in receive mode or unpowered.
Noninverting Receiver Input (and Noninverting Driver Output for the LTC2856-1
and LTC2856-2). Impedance is > 96kΩ in receive mode or unpowered.
Positive Supply. 4.5V < V
CC
< 5.5V. Bypass with a 0.1μF ceramic capacitor.
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