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부품번호 | SP1485E 기능 |
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기능 | Enhanced Low Power Half-Duplex RS-485 Transceivers | ||
제조업체 | Exar | ||
로고 | |||
전체 8 페이지수
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
SP1481E and SP1485E
Pinout (Top View)
A
R
VOD
B
R VOC
Figure 1. RS-485 Driver DC Test Load Circuit
CL1
DI A RDIFF
B
CL2
A
RO
B
15pF
Figure 3. RS-485 Driver/Receiver Timing Test Circuit
Pin function
Pin 1 – 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 Non-inverting.
Pin 7 – B – Driver Output/Receiver Input Inverting.
Pin 8 – Vcc – Positive Supply 4.75V<Vcc< 5.25V.
Receiver
Output
Test Point
1kΩ
S1 VCC
CRL 1kΩ
S2
Figure 2. Receiver Timing Test Load Circuit
Output
Under
Test CL
500
S1 VCC
S2
Figure 4. RS-485 Driver Timing Test Load #2 Circuit
+3V
DI
0V
DRIVER
OUTPUT
B
A
DIFFERENTIAL VO+
OUTPUT 0V
VA –VB VO–
f ≥1MHz; tR ≤1ns; tF ≤1ns
1.5V
tPLH tPHL
VO 1/2VO
tR
1.5V
Figure 5. Driver Propagation Delays
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
1/2VO
tF
SP1481E-1485E_103_052413
4페이지 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP1481E-1485E_103_052413
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ SP1485E.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
SP1485E | Enhanced Low Power Half-Duplex RS-485 Transceivers | Exar |
SP1485E | Enhanced Low Power Half-Duplex RS-485 Transceivers | Sipex |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |