Datasheet

LTC2854/LTC2855
3
285455fc
For more information www.linear.com/LTC2854
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
CC
= 3.3V unless otherwise noted (Note 2).
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Driver
|V
OD
| Differential Driver Output Voltage R = ∞, V
CC
= 3V (Figure 1)
R = 27Ω, V
CC
= 3V (Figure 1)
R = 50Ω, V
CC
= 3.13V (Figure 1)
l
l
l
1.5
2
V
CC
V
CC
V
CC
V
V
V
D|V
OD
| Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
R = 27Ω or R = 50Ω (Figure 1)
l
0.2 V
V
OC
Driver Common Mode Output Voltage R = 27Ω or R = 50Ω (Figure 1)
l
3 V
D
|V
OC
| Change in Magnitude of Driver
Common Mode Output Voltage for
Complementary Output States
R = 27Ω or R = 50Ω (Figure 1)
l
0.2 V
I
OZD
Driver Three-State (High Impedance)
Output Current on Y and Z
DE = OV, (Y or Z) = –7V, 12V (LTC2855)
H-Grade
l
l
±10
±50
µA
µA
I
OSD
Maximum Driver Short-Circuit Current –7V ≤ (Y or Z) ≤ 12V (Figure 2)
l
–250
180 ±250
300
mA
mA
Receiver
I
IN
Receiver Input Current (A, B) DE = TE = 0V, V
CC
= 0V or 3.3V, V
IN
= 12V
(Figure 3) (C-, I-Grade)
DE = TE = 0V, V
CC
= 0V or 3.3V, V
IN
= –7V,
(Figure 3) (C-, I-Grade)
l
l
–100
125 µA
µA
DE = TE = 0V, V
CC
= 0V or 3.3V, V
IN
= 12V
(Figure 3) (H-Grade)
DE = TE = 0V, V
CC
= 0V or 3.3V, V
IN
= –7V,
(
Figure 3) (H-Grade)
l
l
–145
250 µA
µA
R
IN
Receiver Input Resistance RE = V
CC
or 0V, DE = TE = 0V,
V
IN
= –7V, –3V, 3V, 7V, 12V (Figure 3)
(C-, I-Grade)
l
96 125
RE = V
CC
or 0V, DE = TE = 0V,
V
IN
= –7V, –3V, 3V, 7V, 12V (Figure 3)
(H-Grade)
l
48 125
V
TH
Receiver Differential Input Threshold
Voltage
–7V ≤ B ≤ 12V
l
±0.2 V
DV
TH
Receiver Input Hysteresis B
= 0V
25 mV
V
OH
Receiver Output HIGH Voltage I(RO) = –4mA, A-B = 200mV, V
CC
= 3V
l
2.4 V
V
OL
Receiver Output LOW Voltage I(RO) = 4mA, A-B = –200mV, V
CC
= 3V
l
0.4 V
I
OZR
Receiver Three-State (High Impedance)
Output Current on RO
RE = V
CC
, 0V ≤ RO ≤ V
CC
l
±1 µA
I
OSR
Receiver Short-Circuit Current 0V ≤ RO ≤ V
CC
l
±85 mA
R
TERM
Receiver Input Terminating Resistor TE = V
CC
, V
AB
= 2V, V
B
= –7V, 0V, 10V
(Figure 8)
l
108 120 156 Ω
Logic
V
IH
Logic Input High Voltage V
CC
= 3.6V
l
2 V
V
IL
Logic Input Low Voltage V
CC
= 3V
l
0.8 V
I
INL
Logic Input Current
l
0 ±10 µA
Supplies
I
CCS
Supply Current in Shutdown Mode DE = 0V, RE = V
CC
, TE = 0V
(C-, I-Grade)
(H-Grade)
l
l
0
0
5
15
µA
µA
I
CCR
Supply Current in Receive Mode DE = 0V, RE = 0V, TE = 0V
l
370 900 µA
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