LTC2846CG#PBF Linear Technology, LTC2846CG#PBF Datasheet - Page 12

• Manufacturer Part Number: LTC2846CG#PBF
• Description: IC TXRX 3.3V MULTIPROTCOL 36SSOP
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC2846CG#PBF

• Number Of Drivers/receivers: 3/3
• Protocol: Multiprotocol
• Voltage - Supply: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIO S I FOR ATIO
LTC2846
When the cable is removed, leaving all mode pins uncon-
nected, the LTC2846/LTC2844 will enter no-cable mode.
In this mode the LTC2846/LTC2844 supply current drops
to less than 900 A and the LTC2846/LTC2844 driver out-
puts are forced into a high impedance state. At the same
time, the R2 and R3 receivers of the LTC2846 are differ-
entially terminated with 103 and the other receivers on
12
CONTROLLER
SERIAL
SCTE
DTR
DCD
DSR
RXD
RXC
RTS
CTS
TXD
TXC
LL
U
U
D4
D1
D2
D3
D1
D2
D3
LTC2844
R1
R2
R3
R4
R1
R2
R3
LTC2846
Figure 17. Complete Multiprotocol Interface in EIA530 Mode
DTE
W
103
103
103
U
SCTE
TXC
RXC
RXD
TXD
DCD
DSR
RTS
DTR
CTS
LL
the LTC2846 and LTC2844 are terminated with 30k to
ground.
Cable Termination
Traditional implementations used expensive relays to
switch resistors or required the user to change termina-
tion modules every time a new interface standard was
103
103
LTC2846
DCE
LTC2844
R4
R2
R3
R1
R3
R2
R1
D3
D2
D1
D3
D2
D1
D4
TXD
SCTE
TXC
RXC
RXD
RTS
DTR
DCD
DSR
CTS
LL
CONTROLLER
SERIAL
2846 F17
sn2846 2846fs