LTC485IS8 Linear Technology, LTC485IS8 Datasheet - Page 3

• Manufacturer Part Number: LTC485IS8
• Description: IC TXRX INTRFC RS485 LOPWR 8SOIC
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC485IS8

• Number Of Drivers/receivers: 1/1
• Protocol: RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
V
V
I
I
V
ΔV
V
V
I
R
SWITCHING CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
I
I
I
I
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into device pins are positive; all currents out ot device
pins are negative. All voltages are referenced to device ground unless
otherwise specifi ed.
IN1
IN2
OZR
CC
OSD1
OSD2
OSR
PLH
PHL
SKEW
r
ZH
ZL
LZ
HZ
PLH
PHL
SKD
ZL
ZH
LZ
HZ
TH
IH
IL
OH
OL
, t
IN
TH
f
PARAMETER
Supply Current
Driver Short-Circuit Current, V
Driver Short-Circuit Current, V
Receiver Short-Circuit Current
Driver Input to Output
Driver Input to Output
Driver Output to Output
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
Receiver Input to Output
|t
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
PARAMETER
Input High Voltage
Input Low Voltage
Input Current
Input Current (A, B)
Differential Input Threshold Voltage for Receiver –7V ≤ V
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State (High Impedance) Output Current
at Receiver
Receiver Input Resistance
PLH
– t
PHL
| Differential Receiver Skew
OUT
OUT
= HIGH
= LOW
CONDITIONS
No Load, Pins 2, 3, 4 = 0V or 5V
V
V
0V ≤ V
R
(Figures 3 and 5)
C
C
C
C
R
(Figures 3 and 7)
C
C
C
C
O
O
L
L
L
L
RL
RL
RL
RL
DIFF
DIFF
= 100pF (Figures 4 and 6) S2 Closed
= 100pF (Figures 4 and 6) S1 Closed
= 15pF (Figures 4 and 6) S1 Closed
= 15pF (Figures 4 and 6) S2 Closed
= – 7V
= 10V
A
A
= 15pF (Figures 2 and 8) S1 Closed
= 15pF (Figures 2 and 8) S2 Closed
= 15pF (Figures 2 and 8) S1 Closed
= 15pF (Figures 2 and 8) S2 Closed
= 25°C. V
= 25°C. V
= 54Ω, C
= 54Ω, CL1 = CL2 = 100pF ,
CONDITIONS
DE, DI, RE
DE, DI, RE
DE, DI, RE
DE = 0, V
V
I
I
V
–7V ≤ V
O
O
O
CM
CC
≤ V
= –4mA, V
= 4mA, V
= Max, 0.4V ≤ V
The
The
= 0V
CC
CM
CM
L1
CC
l
l
CC
CC
= C
≤ 12V
≤ 12V
denotes the specifi cations which apply over the full operating
ID
denotes the specifi cations which apply over the full operating
= 0V or 5.25V
= 5V ±5%, unless otherwise noted. (Notes 2 and 3)
ID
= 5V ±5%, unless otherwise noted. (Notes 2 and 3)
= –200mV
L2
= 200mV
= 100pF ,
Note 3: All typicals are given for V
Note 4: The LTC485 is guaranteed by design to be functional over a supply
voltage range of 5V ±10%. Data sheet parameters are guaranteed over the
tested supply voltage range of 5V ±5%.
O
≤ 2.4V
Outputs Enabled
Outputs Disabled
V
V
IN
IN
= 12V
= –7V
CC
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
l
l
l
= 5V and T
MIN
MIN
–0.2
3.5
35
35
10
10
30
30
12
7
3
2
A
TYP
500
300
100
100
= 25°C.
TYP
15
40
40
40
40
90
90
13
20
20
20
20
30
30
70
5
LTC485
MAX
MAX
–0.8
900
500
250
250
200
200
0.8
0.2
0.4
85
50
50
10
25
70
70
70
70
50
50
50
50
±2
±1
±1
UNITS
UNITS
3
485fh
mA
mA
mV
mA
mA
mA
kΩ
μA
μA
μA
μA
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
V
V
V