LTC1545CG#PBF Linear Technology, LTC1545CG#PBF Datasheet - Page 10

• Manufacturer Part Number: LTC1545CG#PBF
• Description: IC TXRX SOFTWARE SELECT 36-SSOP
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC1545CG#PBF

• Number Of Drivers/receivers: 5/5
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Protocol: -

APPLICATIONS
–3.25mA
LTC1545
10
GENERATOR
–10V
B
C
A
'
'
'
Figure 12. V.10 Receiver Input Impedance
Figure 13. V.10 Receiver Configuration
Figure 11. Typical V.10 Interface
A
B
C
A
INTERCONNECTING
U
GND
R8
6k
S3
BALANCED
–3V
CABLE
20k
20k
R5
R4
INFORMATION
U
I
Z
R6
10k
R7
10k
C
A
TERMINATION
'
'
3V
W
CABLE
RECEIVER
LTC1545
1545 F13
LOAD
U
RECEIVER
10V
1545 F12
1545 F11
V
3.25mA
Z
In V.11 mode, all switches are off except S1 inside the
LTC1344A which connects a 103 differential termina-
tion impedance to the cable as shown in Figure 15.
V.28 (RS232) Interface
A typical V.28 unbalanced interface is shown in Figure 16.
A V.28 single-ended generator output A with ground C is
connected to a single-ended receiver with input A
nected to A, ground C
ground C.
In V.28 mode, all switches are off except S3 inside the
LTC1543/LTC1545 which connects a 6k (R8) impedance
to ground in parallel with 20k (R5) plus 10k (R6) for a
combined impedance of 5k as shown in Figure 17. The
noninverting input is disconnected inside the LTC1543/
LTC1545 receiver and connected to a TTL level reference
voltage for a 1.4V receiver trip point.
C
A
B
'
'
'
GENERATOR
R1
51.5
S1
R2
51.5
S2
Figure 15. V.11 Receiver Configuration
LTC1344A
A
B
C
Figure 14. Typical V.11 Interface
124
R3
INTERCONNECTING
BALANCED
CABLE
'
A
B
connected via the signal return
GND
R8
6k
S3
A
C
B
20k
20k
TERMINATION
R5
R4
'
'
'
CABLE
100
MIN
R6
10k
R7
10k
LOAD
RECEIVER
RECEIVER
LTC1543
LTC1545
1545 F15
'
1545 F14
con-