Datasheet
LTC2870/LTC2871
3
28701f
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2870CFE#PBF
LTC2870IFE#PBF
LTC2870CFE#TRPBF
LTC2870IFE#TRPBF
LTC2870FE
LTC2870FE
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
0°C to 70°C
–40°C to 85°C
LTC2870CUFD#PBF
LTC2870IUFD#PBF
LTC2870CUFD#TRPBF
LTC2870IUFD#TRPBF
2870
2870
28-Lead (4mm × 5mm) Plastic QFN
28-Lead (4mm × 5mm) Plastic QFN
0°C to 70°C
–40°C to 85°C
LTC2871CFE#PBF
LTC2871IFE#PBF
LTC2871CFE#TRPBF
LTC2871IFE#TRPBF
LTC2871FE
LTC2871FE
38-Lead Plastic TSSOP
38-Lead Plastic TSSOP
0°C to 70°C
–40°C to 85°C
LTC2871CUHF#PBF
LTC2871IUHF#PBF
LTC2871CUHF#TRPBF
LTC2871IUHF#TRPBF
2871
2871
38-Lead (5mm × 7mm) Plastic QFN
38-Lead (5mm × 7mm) Plastic QFN
0°C to 70°C
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
LTC2871 LTC2871
13 14 15 16
TOP VIEW
39
V
EE
UHF PACKAGE
38-LEAD (5mm s 7mm) PLASTIC QFN
17 18 19
38 37 36 35 34 33 32
24
25
26
27
28
29
30
31
8
7
6
5
4
3
2
1V
EE
ROUT1
ROUT2
CH2
RX485
DX485
DI
DIN1
DIN2
DX232
RX232
V
EE
RIN1
RIN2
A
B
V
CC
Y
GND
Z
DOUT1
DOUT2
V
CC
V
DD
TE485
H/F
LB
V
L
RO
V
CC
GND
FEN
GND
CAP
V
EE
GND
SW
V
EE
23
22
21
20
9
10
11
12
T
JMAX
= 125°C, θ
JA
= 34°C/W
EXPOSED PAD (PIN 39) IS V
EE
,
MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
TOP VIEW
FE PACKAGE
38-LEAD PLASTIC SSOP
38
27
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
V
L
LB
H/F
TE485
V
EE
ROUT1
ROUT2
CH2
RX485
DX485
DI
DIN1
DIN2
DX232
RX232
V
EE
FEN
GND
CAP
RO
V
CC
GND
RIN1
RIN2
A
B
V
CC
Y
GND
Z
DOUT1
DOUT2
V
CC
V
DD
V
EE
SW
GND
V
EE
39
V
EE
T
JMAX
= 125°C, θ
JA
= 29°C/W
EXPOSED PAD (PIN 39) IS V
EE
,
MUST BE SOLDERED TO PCB
PIN CONFIGURATIONS
PART NUMBER CONFIGURABLE TRANSCEIVER COMBINATIONS (RS485 + RS232) PACKAGES
LTC2870 (0 + 0), (1 + 0), (0 + 2) 28-Lead QFN, 28-Lead TSSOP
LTC2871 (0 + 0), (1 + 0), (1 + 1), (1 + 2), (0 + 1), (0 + 2) 38-Lead QFN, 38-Lead TSSOP
PRODUCT SELECTION GUIDE