LTC2855 Linear Technology, LTC2855 Datasheet - Page 3

• Manufacturer Part Number: LTC2855
• Description: 3.3V 20Mbps RS485/RS422 Transceivers
• Manufacturer: Linear Technology

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ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
Driver
|V
Δ|V
V
Δ|V
I
I
Receiver
I
R
V
ΔV
V
V
I
I
R
Logic
V
V
I
Supplies
I
I
OZD
OSD
IN
OZR
OSR
INL
CCS
CCR
OC
TH
OH
OL
TERM
IH
IL
IN
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
Receiver Input Current (A, B)
Receiver Input Resistance
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 Short-Circuit Current
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
CONDITIONS
R = ∞, V
R = 27Ω, V
R = 50Ω, V
R = 27Ω or R = 50Ω (Figure 1)
R = 27Ω or R = 50Ω (Figure 1)
R = 27Ω or R = 50Ω (Figure 1)
DE = OV, (Y or Z) = –7V, 12V (LTC2855)
–7V ≤ (Y or Z) ≤ 12V (Figure 2)
DE = TE = 0V, V
(Figure 3) (C, I-Grade)
DE = TE = 0V, V
(Figure 3) (C, I-Grade)
DE = TE = 0V, V
(Figure 3) (H-Grade)
DE = TE = 0V, V
(Figure 3) (H-Grade)
⎯ R ⎯ E = V
V
(C, I-Grade)
⎯ R ⎯ E = V
V
(H-Grade)
–7V ≤ B ≤ 12V
B = 0V
I(RO) = –4mA, A-B = 200mV, V
I(RO) = 4mA, A-B = –200mV, V
⎯ R ⎯ E = V
0V ≤ RO ≤ V
(Figure 8)
V
V
DE = 0V, ⎯ R ⎯ E = V
DE = 0V, ⎯ R ⎯ E = 0V, TE = 0V
TE = V
IN
IN
CC
CC
A
(LTC2854C/LTC2854I, LTC2855C/LTC2855I)
(LTC2854H, LTC2855H)
= –7V, –3V, 3V, 7V, 12V (Figure 3)
= –7V, –3V, 3V, 7V, 12V (Figure 3)
= 25°C, V
= 3.6V
= 3V
CC
CC
CC
CC
CC
, V
, 0V ≤ RO ≤ V
The
or 0V, DE = TE = 0V,
or 0V, DE = TE = 0V,
CC
CC
AB
= 3V (Figure 1)
CC
= 2V, V
= 3V (Figure 1)
= 3.13V (Figure 1)
●
CC
CC
CC
CC
CC
CC
denotes the specifi cations which apply over the full operating
= 3.3V unless otherwise noted (Note 2).
, TE = 0V
= 0V or 3.3V, V
= 0V or 3.3V, V
= 0V or 3.3V, V
= 0V or 3.3V, V
B
CC
= –7V, 0V, 10V
CC
CC
IN
IN
IN
IN
= 3V
= 3V
= –7V,
= –7V,
= 12V
= 12V
LTC2854/LTC2855
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
–250
–100
–145
MIN
108
1.5
2.4
96
48
2
2
TYP
180
125
125
120
370
25
0
0
0
±250
MAX
±0.2
±10
300
125
250
±85
156
±10
900
V
V
V
0.2
0.2
0.4
0.8
±1
15
3
5
CC
CC
CC
285455fa
UNITS
3
mA
mA
mV
mA
kΩ
kΩ
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
Ω
V
V
V
V
V
V
V
V
V
V
V