LTC1482CMS8 Linear Technology, LTC1482CMS8 Datasheet - Page 10

• Manufacturer Part Number: LTC1482CMS8
• Description: IC TXRX RS485 LOWPWR 8-MSOP
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC1482CMS8

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1482
SWITCHI G TI E WAVEFOR S
10
DI/SHDN
A – B
A, B
A, B
RO
RO
RO
DE
–V
– V
DI
U
V
3V
0V
V
B
A
V
O
O
V
V
OD2
OD2
3V
0V
5V
OH
0V
5V
3V
5V
0V
5V
0V
OL
OL
NOTE: DE = 1
V
NOTE: DI = 0 FOR t
NOTE: t
NOTE: DE = 0, RO IS THREE-STATED IN SHUTDOWN, 1k PULL-UP FOR NORMALLY LOW OUTPUT,
1k PULL-DOWN FOR NORMALLY HIGH OUTPUT
O
1/2 V
W
SKD
O
10%
t
= |t
r
0V
PHL
1.5V
1.5V
1.5V
ZL(SHDN)
– t
PLH
90%
2.3V
2.3V
1.5V
1.5V
t
t
1.5V
t
50%
|, DE = V
PLH
DSKEW
SKEW
, t
t
t
t
t
t
ZL(SHDN)
ZH(SHDN)
PHL
ZL(SHDN)
ZH(SHDN)
LZ(SHDN)
Figure 9. Receiver Enable and Shutdown Timing
CC
Figure 7. Driver Enable and Disable Timing
, t
, t
Figure 8. Receiver Propagation Delays
; DI = DE FOR t
Figure 6. Driver Propagation Delays
ZL
ZH
W
f = 1MHz, t
ZH(SHDN)
f = 1MHz, t
OUTPUT NORMALLY HIGH,
500 PULL-DOWN TO GND
OUTPUT NORMALLY LOW
500 PULL-UP TO V
f = 1MHz, t
r
, t
f = 1MHz, t
V
HZ(SHDN)
O
10ns, t
= V(A) – V(B)
r
OUTPUT
OUTPUT
10ns, t
r
f
OUTPUT
; DI = DE FOR t
r
10ns, t
INPUT
10ns
10ns, t
f
CC
10ns
f
f
10ns
10ns
ZL
, t
LZ
; DI = V
t
t
HZ
LZ
CC
, t
, t
t
PHL
t
t
HZ(SHDN)
HZ(SHDN)
LZ(SHDN)
FOR t
LZ(SHDN)
50%
t
PLH
ZH
t
f
, t
1.5V
HZ
90%
1.5V
0V
1.5V
10%
t
SKEW
0.5V
1.5V
0.5V
0.5V
0.5V
1482 F06
1482 F08
1482 F07
1482 F09