SP1481E Datasheet PDF - Exar
| Part Number | SP1481E | |
| Description | Enhanced Low Power Half-Duplex RS-485 Transceivers | |
| Manufacturers | Exar | |
| Logo |  |
|
|
There is a preview and SP1481E download ( pdf file ) link at the bottom of this page. Total 8 Pages | ||
Preview 1 page No Preview Available !
SP1481E/SP1485E
Enhanced Low Power Half-Duplex
RS-485 Transceivers
■ +5V Only
■ Low Power BiCMOS
■ Driver/Receiver Enable for Multi-Drop
configurations
■ Low Power Shutdown Mode
(SP1481E)
■ Enhanced ESD Specifications:
+15KV Human Body Model
+15KV IEC61000-4-2 Air Discharge
description
Now Available in Lead Free Packaging
The SP1481E and the SP1485E are a family of half-duplex transceivers that meet the
specifications of RS-485 and RS-422 serial protocols with enhanced ESD performance. The
ESD tolerance has been improved on these devices to over +15KV for both Human Body
Model and IEC61000-4-2 Air Discharge Method. These devices are pin-to-pin compatible
with Exar's SP481 and SP485 devices as well as popular industry standards. As with the
original versions, the SP1481E and the SP1485E feature Exar's BiCMOS design allowing
low power operation without sacrificing performance. The SP1481E and SP1485E meet the
requirements of the RS-485 and RS-422 protocols up to 20Mbps under load. The SP1481E
is equipped with a low power Shutdown mode.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP1481E-1485E_103_052413
|
| |
 
INPUTS
OUTPUTS
LINE
RE DE DI CONDITION B A
X 1 1 No Fault
0 1
X 1 0 No Fault
1 0
X 0 X
X
Z Z
X 1 X
Fault
Z Z
Table 1. Transmit Function Truth Table
INPUTS
OUTPUTS
RE DE
A-B
R
0 0 +0.2V
1
0 0 -0.2V
0
0
0 Inputs Open
1
1
0
X
Z
Table 2. Receive Function Truth Table
+3V
DE
0V
5V
A, B
VOL
VOH
A, B
0V
f = 1MHz; tR < 1ns ; tF < 1ns
1.5V
tZL
2.3V
Output normally LOW
2.3V
tZH
Output normally HIGH
1.5V
tLZ
0.5V
0.5V
tHZ
Figure 6. Driver Enable and Disable Times
VOD2+
A– B
VOD2–
f = 1MHz; tR ≤10ns; tF ≤ 10ns
0V INPUT
VOH
R
VOL
tPHL
1.5V OUTPUT
tPLH
Figure 7. Receiver Propagation Delays
+3V
RE
0V
5V
R
VIL
VIH
R
0V
1.5V f = 1MHz; tR ≤ 1ns; tF ≤ 1ns
t ZL
1.5V
Output normally LOW
1.5V
t ZH
Output normally HIGH
0V
1.5V
1.5V
t LZ
0.5V
0.5V
t HZ
Figure 8. Receiver Enable and Disable Times
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP1481E-1485E_103_052413
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for SP1481E electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ SP1481E.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | MFRS |
| SP1481E | The function is Enhanced Low Power Half-Duplex RS-485 Transceivers. Exar | |
| SP1481E | The function is 15kV Enhanced Low Power Half-Duplex RS-485 Transceivers. Sipex |  |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
SP14
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||