ADM1485ARMZ-REEL7 Analog Devices Inc, ADM1485ARMZ-REEL7 Datasheet - Page 4

• Manufacturer Part Number: ADM1485ARMZ-REEL7
• Description: IC,LINE TRANSCEIVER,BICMOS,1 DRIVER,1 RCVR,TSSOP,8PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Type: Transceiverr

Specifications of ADM1485ARMZ-REEL7

• Number Of Drivers/receivers: 1/1
• Protocol: 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: Lead free / RoHS Compliant

Test Circuits
Switching Characteristics
ADM1485
–V
3V
0V
V
0V
Figure 1. Driver Propagation Delay, Rise/Fall Timing
B
A
A, B
A, B
O
O
V
DE
O
10% POINT
Test Circuit 1. Driver Voltage Measurement
Test Circuit 2. Driver Voltage Measurement
1/2VO
Test Circuit 3. Driver Propagation Delay
Figure 2. Driver Enable/Disable Timing
90% POINT
1.5V
t
t
ZH
ZL
t
PLH
1.5V
t
R
2.3V
2.3V
t
SKEW
A
B
=
t
PLH
V
OD3
–
V
t
PHL
OD
R
LDIFF
60
375
375
t
t
LZ
HZ
1.5V
1.5V
V
V
OL
OH
R
R
C
C
L1
L2
t
+ 0.5V
– 0.5V
V
PHL
TST
V
90% POINT
t
3V
0V
OC
F
10% POINT
V
V
OL
OH
0V
–4–
A, B
RO
RE
R
R
0V
0V OR 3V
Test Circuit 5. Receiver Propagation Delay
Figure 4. Receiver Enable/Disable Timing
DE IN
RE IN
+1.5V
–1.5V
Test Circuit 6. Receiver Enable/Disable
Figure 3. Receiver Propagation Delay
Test Circuit 4. Driver Enable/Disable
1.5V
t
t
t
PLH
ZH
ZL
S1
0V
A
B
1.5V
1.5V
1.5V
DE
RE
t
SKEW
RE
A
B
O/P HIGH
O/P LOW
=
S1
t
PLH
C
L
–
C
C
t
L
PHL
L
V
OUT
t
R
t
1.5V
HZ
LZ
L
t
V
PHL
0V
V
OUT
OUT
R
V
V
L
OL
OH
1.5V
+ 0.5V
V
– 0.5V
CC
S2
V
3V
0V
CC
S2
V
V
REV. E
OL
OH
V
V
OH
OL