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부품번호 | SP1491E 기능 |
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기능 | Full Duplex RS-485 Transceivers | ||
제조업체 | Sipex | ||
로고 | |||
전체 10 페이지수
® Preliminary SP1490E/SP1491E
Full Duplex RS-485 Transceivers
FEATURES
■ +5V Only
■ Low Power BiCMOS
■ Driver/Receiver Enable (SP1491E)
■ RS-485 and RS-422 Drivers/Receivers
■ Pin Compatible with SN75179
(SP1490E)
■ Pin Compatible with SN75180
(SP1491E)
■ Improved ESD Specifications
±15kV Human Body Model
±15kV IEC1000-4-2 Air Discharge
±8kV IEC1000-4-2 Contact Discharge
VCC 1
RO 2
DI 3
GND 4
SP1490E
8 Pin - nSOIC
8A
7B
6Z
5Y
APPLICATIONS
■ Industial Networks ■ Telecom
■ Motor Control
■ HVAC/ Building Control
DESCRIPTION
The SP1490E is a low power differential line driver/receiver meeting RS-485 and RS-422
standards up to 20Mbps. The SP1491E is identical to the SP1490E with the addition of driver
and receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity,
over wide common mode range. The SP1490E is available in 8-pin plastic DIP and 8-pin
NSOIC packages for operation over the commercial and industrial temperature ranges. The
SP1491E is available in 14-pin DIP and 14-pin NSOIC packages for operation over the
commercial and industrial temperature ranges.
BLOCK DIAGRAM
Vcc 1
RO 2
DI 3
GND 4
R
D
NC 1
8A
RO 2
7B
REB 3
6Z
DE 4
5Y
DI 5
GND 6
GND 7
R
D
14 Vcc
13 NC
12 A
11 B
10 Z
9Y
8 NC
SP1490E
SP1491E
Date: 5/18/04
SP1490E/1491E Full Duplex RS-485 Transceivers
1
© Copyright 2004 Sipex Corporation
+3V
DI
0V
DRIVER
OUTPUT
B
A
DIFFERENTIAL VO+
OUTPUT 0V
VA – VB VO–
tSKEW = | tDPLH - tDPHL |
f = 1MHz; tR < 10ns; tF < 10ns
1.5V
tPLH
tPHL
VO 1/2VO
tDPLH
tDPHL
tR
1.5V
1/2VO
tF
Figure 6. Driver Propagation Delays
+3V
DE
0V
5V
A, B
VOL
VOH
A, B
0V
f = 1MHz; tR < 10ns; tF < 10ns
1.5V
tZL
2.3V Output normally LOW
2.3V Output normally HIGH
tZH
1.5V
tLZ
0.5V
0.5V
tHZ
Figure 7. Driver Enable and Disable Times SP1491E only
V0D2+
A–B
V0D2–
VOH
R
VOL
tPHL
tSKEW = | tPHL - tPLH |
0V
INPUT
1.5V
OUTPUT
tPLH
f = 1MHz; tR < 10ns; tF < 10ns
Figure 8. Receiver Propagation Delays
0V
1.5V
Date: 5/18/04
SP1490E/1491E Full Duplex RS-485 Transceivers
4
© Copyright 2004 Sipex Corporation
4페이지 PACKAGE: 14 PIN NSOIC
D
e
E/2
E1
E
E1/2
INDEX AREA
(D/2 X E1/2)
1
Bb
TOP VIEW
SEE VIEW C
Ø1
A A2
A1
Seating Plane
Ø1 L
L1
VIEW C
L2
Gauge Plane
Ø
SIDE VIEW
14 Pin NSOIC
(JEDEC MS-012,
AB - VARIATION)
DIMENSIONS
Minimum/Maximum
(mm)
COMMON HEIGHT DIMENSION
SYMBOL
MIN NOM MAX
A 1.35 - 1.75
A1 0.10 - 0.25
A2 1.25 - 1.65
b 0.31 - 0.51
c 0.17 - 0.25
D 8.65 BSC
E 6.00 BSC
E1 3.90 BSC
e 1.27 BSC
L 0.40 - 1.27
L1 1.04 REF
L2 0.25 BSC
Ø 0º - 8º
Ø1 5º - 15º
WITH PLATING
b
c
BASE METAL
CONTACT AREA
14 PIN NSOIC
(Narrow refers to symbol E1)
Date: 5/18/04
SP1490E/1491E Full Duplex RS-485 Transceivers
7
© Copyright 2004 Sipex Corporation
7페이지 | |||
구 성 | 총 10 페이지수 | ||
다운로드 | [ SP1491E.PDF 데이터시트 ] |
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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 |
SP1491E | Full Duplex RS-485 Transceivers | Sipex |
SP1491E | Full Duplex RS-485 Transceivers | Exar |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |