SP485EMN-L Exar Corporation, SP485EMN-L Datasheet - Page 5

• Manufacturer Part Number: SP485EMN-L
• Description: IC TXRX RS485 HALF DUPLEX 8NSOIC
• Manufacturer: Exar Corporation
• Type: Transceiverr

Specifications of SP485EMN-L

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Number Of Drivers/receivers: 1/1
• Protocol: RS485
• Voltage - Supply: 5V
• Mounting Type: Surface Mount
• Operating Supply Voltage: 5 V
• Supply Current: 600 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1016-1173-5

Figure 3. RS-485 Driver/Receiver Timing Test
Figure 5. Driver Propagation Delays
t
SKEW
Figure 1. RS-485 Driver DC Test Load Circuit
DI
DRIVER INPUT
DIFFERENTIAL
= |t
A
B
OUTPUT
OUTPUT
DPLH
DRIVER
A
B
V
V
A
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
R
OD
– V
L
- t
DPHL
B
C
C
L1
L2
R
R
V
V
+3V
|
O
O
0V
0V
A
B
+
–
V
OC
A
B
V
O
1/2V
RO
O
15pF
f ≥ 1MHz;
1.5V
5
Figure 2. Receiver Timing Test Load Circuit
Pin  - RO - Receiver Output
Pin 2 - RE - Receiver Output Enable Active LOW
Pin 3 - DE - Driver Output Enable Active HIGH
Pin 4 DI - Driver Input
Pin 5 - GND - Ground Connection
Pin 6 - A - Driver Output / Receiver input
Pin 7 - B - Driver Output / Receiver Input Inverting
Pin 8 - Vcc - Positive Supply 4.75V ≤ Vcc ≤ 5.25V
Figure 4. Driver Timing Test Load #2 Circuit
Receiver
Output
Under
t
t
t
Output
Test
PLH
R
DPLH
≤ 10ns; t
t
R
Non-Inverting
C
C
RL
L
F
t
Test Point
t
DPHL
PHL
≤ 10ns
500Ω
1kΩ
TEST CIRCUITS
1.5V
S
PIN FUNCTION
S
SP48E,485E_02_08080
1
2
S
S
1
2
1kΩ
t
F
1/2V
V
V
CC
CC
O