485/232_1, 485/232_2 ................................ –0.3V to 7V
FEN, RA1, RA2, RB1, RB2 ...............–0.3V to (V
L
+ 0.3V)
Differential Enabled Terminator Voltage
(A1-B1 or A2-B2 or Y1-Z1 or Y2-Z2) .....................±6V
Operating Temperature
LTC2872C ................................................ 0°C to 70°C
LTC2872I .............................................–40°C to 85°C
Storage Temperature Range .................. –65°C to 125°C
38 37 36 35 34 33 32
V
CC
1
A1 2
B1 3
Y1 4
GND 5
Z1 6
DY1 7
DZ1 8
RXEN1
9
DXEN1 10
TE485_1 11
TE485_2 12
UHF PACKAGE
38-LEAD (5mm
×
7mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA
= 34.7°C/W
EXPOSED PAD (PIN #39) IS V
EE
, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LTC2872CUHF#PBF
LTC2872IUHF#PBF
TAPE AND REEL
LTC2872CUHF#TRPBF
LTC2872IUHF#TRPBF
PART MARKING*
2872
2872
PACKAGE DESCRIPTION
38-Lead (5mm
×
7mm) Plastic QFN
38-Lead (5mm
×
7mm) Plastic QFN
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/
2872f
2
LTC2872
elecTrical characTerisTics
SYMBOL
V
CC
V
L
PARAMETER
Supply Voltage Operating Range
Logic Supply Voltage Operating Range
V
CC
Supply Current in Shutdown Mode
V
CC
Supply Current in RS485 Transceiver Mode
(Outputs Unloaded) (Note 3)
V
CC
Supply Current in RS232 Transceiver Mode
(Outputs Unloaded) (Note 3)
V
L
≤ V
CC
RXEN1
=
RXEN2
= V
L
,
DXEN1 = DXEN2 = FEN = H/F = 0V
485/232_1 = 485/232_2 = DXEN1 =
DXEN2 = V
L
,
RXEN1
=
RXEN2
= 0V
DXEN1 = DXEN2 = V
L
; 485/232_1 =
485/232_2 =
RXEN1
=
RXEN2
= 0V
Power Supply
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
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