LTC2851 LINER [Linear Technology], LTC2851 Datasheet - Page 3

• Manufacturer Part Number: LTC2851
• Description: 20Mbps RS485 Transceivers
• Manufacturer: LINER [Linear Technology]

elecTrical characTerisTics
SYMBOL
Driver
|V
D|V
V
D|V
I
I
Receiver
I
V
DV
V
V
I
R
R
Logic
V
V
I
Supplies
I
I
I
I
I
I
temperature range, otherwise specifications are at T
OZD
OSD
IN2
OZR
IN1
SHDN
CCR
CCT
CCTS
CCL
CCRT
OC
TH
OH
OL
IH
IL
IN
TERM
OD
TH
OD
OC
|
|
|
PARAMETER
Differential Driver Output Voltage
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
Driver Common Mode Output Voltage
Change in Magnitude of Driver
Common Mode Output Voltage for
Complementary Output States
Driver Three-State (High Impedance)
Output Current on Y and Z
Maximum Driver Short-Circuit Current –7V ≤ (Y or Z) ≤ 12 (Figure 2)
Receiver Input Current (A, B)
Receiver Differential Input Threshold
Voltage
Receiver Input Hysteresis
Receiver Output HIGH Voltage
Receiver Output LOW Voltage
Receiver Three-State (High
Impedance) Output Current on RO
Receiver Input Resistance
Receiver Input Terminating Resistor
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
Supply Current in Shutdown Mode
Supply Current in Receive Mode
Supply Current in Transmit Mode
Supply Current in Transmit SLO Mode
Supply Current in Loopback Mode
(Both Driver and Receiver Enabled)
Supply Current in Termination Mode
CONDITIONS
R = ∞, I
R = 27Ω (RS485), V
R = 50Ω (RS422), V
R = 27Ω or R = 50Ω (Figure 1)
R = 27Ω or R = 50Ω (Figure 1)
R = 27Ω or R = 50Ω (Figure 1)
DE = OV, V
(LTC2861 Only)
DE = TE = 0V, V
Other at 0V
(H-Grade)
DE = TE = 0V, V
Other at 0V
(H-Grade)
–7V ≤ V
V
I
I
RE = 5V, 0V ≤ V
RE = 5V or 0V, DE = TE = 0V
–7V ≤ V
(H-Grade)
TE = 5V, V
(Figure 7)
DE, DI, RE, TE, SLO, V
DE, DI, RE, TE, SLO, V
DE, DI, RE, TE, SLO
DE = 0V, RE = V
No Load, DE = 0V, RE = 0V, TE = 0V
No Load, DE = V
No Load, DE = V
No Load, DE = V
DE = 0V, RE = V
0
0
CM
= –4mA, V
= 4mA, V
A
= 0V
= 25°C, V
O
CM
A
= V
= 0mA, V
The
AB
O
≤ 12
ID
= –7V, +12V
ID
B
= 2V, V
= –200mV, V
≤ 12V
l
= 200mV, V
CC
CC
CC
O
CC
CC
CC
CC
CC
denotes the specifications which apply over the full operating
≤ V
, TE = 0V
, TE = V
= 0V or 5V, V
= 0V or 5V, V
, RE = V
, RE = V
, RE= 0V, SLO = V
= 5V unless otherwise noted (Note 2).
CC
CC
CC
B
CC
= 4.5V (Figure 1)
= –7, 0, 10V
CC
CC
= 4.5V (Figure 1)
= 4.5V (Figure 1)
= 4.5V
= 4.5V
CC
CC
CC
CC
CC
, SLO = V
, SLO = V
, SLO = 0V, TE = 0V
= 4.5V
= 4.5V
A
A
or V
or V
CC
B
CC
B
CC
, TE = 0V
= –7V,
= 12V,
, TE = 0V
LTC2859/LTC2861
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
–100
–145
MIN
108
1.5
2.0
2.4
96
48
2
±120
TYP
125
125
120
540
630
670
660
640
25
0
0
±250
1000
1100
1100
1180
MAX
±0.2
V
V
V
±10
125
250
156
±10
900
0.2
3.0
0.2
0.4
0.8
±1
5
CC
CC
CC
285961fc
UNITS
3
mA
mV
kΩ
kΩ
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
Ω
V
V
V
V
V
V
V
V
V
V
V