sp488ect Exar Corporation, sp488ect Datasheet

no-image

sp488ect

Manufacturer Part Number
sp488ect
Description
Enhanced Quad Rs-485/rs-422 Line Receivers
Manufacturer
Exar Corporation
Datasheet
SP488E/489EDS/07
DESCRIPTION…
The SP488E and SP489E are low-power quad differential line receivers 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 IEC1000-4-2 Air Discharge Method. These devices are superior drop-in replace-
ments to Sipex's SP488 and SP489 devices as well as popular industry standards. As with
the original versions, the SP488E features a common receiver enable control and the
SP489E provides independent receiver enable controls for each pair of receivers. Both
feature wide common-mode input ranges. The receivers have a fail-safe features which
forces a logic "1" output when receiver inputs are left floating. Both are available in 16-pin
plastic DIP and SOIC packages.
GND
RI
RI
RI
RI
RO
RO
EN
RS-485 or RS-422 Applications
Quad Differential Line Receivers
Receiver Output Disable
–7V to +12V Common Mode Input Range
1mA Supply Current
Single +5V Supply Operation
Superior Drop-in Replacement for
SN75173, SN75175, LTC488 and LTC489
Improved ESD Specifications:
+15kV Human Body Model
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
1
1
2
2
Enhanced Quad RS-485/RS-422 Line Receivers
B
A
A
B
1
2
1
2
3
4
5
6
7
8
1
2
®
SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers
SP488E
3
4
16
15
14
13
12
11
10
9
V
RI
RI
RO
EN
RO
RI
RI
CC
4
4
3
3
B
A
4
3
A
B
EN
1
1
GND
RI
RI
/EN
RI
RI
RO
RO
1
1
2
2
B
A
A
B
1
2
2
1
2
3
4
5
6
7
8
SP488E and SP489E
1
2
© Copyright 2000 Sipex Corporation
SP489E
3
4
16
15
14
13
12
11
10
9
V
RI
RI
RO
EN
RO
RI
RI
CC
4
4
3
3
B
A
3
A
B
4
3
/EN
4

Related parts for sp488ect

sp488ect Summary of contents

Page 1

Enhanced Quad RS-485/RS-422 Line Receivers RS-485 or RS-422 Applications Quad Differential Line Receivers Receiver Output Disable –7V to +12V Common Mode Input Range 1mA Supply Current Single +5V Supply Operation Superior Drop-in Replacement for SN75173, SN75175, LTC488 and LTC489 ...

Page 2

ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for ...

Page 3

EN A DRIVER RCVR 100pF EN 1/4 SP486E 1/4 SP488E Figure 1. Timing Test Circuit SP488 PINOUT Pin 1 — — Receiver 1 input B. 1 Pin 2 — Receiver 1 input ...

Page 4

Pin 13 — RO — Receiver 4 Output — Receiver 4 output is enabled 200mV, Receiver 4 output is high. If Receiver 4 output is enabled, and < 200mV, Receiver 4 ...

Page 5

AC PARAMETERS 5%; typicals unless otherwise noted. CC AMB PARAMETER MIN. PROPAGATION DELAY Receiver Input to Output Low to HIGH (t ) PLH High to LOW (t ) PHL Differential ...

Page 6

SW1 SW1 DC Power Source Figure 5. ESD Test Circuit for Human Body Model SW1 SW1 DC Power Source Figure 6. ESD Test Circuit for IEC1000-4-2 ESD TOLERANCE The SP488E and SP489E ...

Page 7

The premise with IEC1000-4-2 is that the system is required to withstand an amount of static electricity when ESD is applied to points and surfaces of the equipment that are accessible to personnel during normal usage. ...

Page 8

D1 = 0.005" min. (0.127 min 0.100 BSC (2.540 BSC) ALTERNATE END PINS (BOTH ENDS) SP488E/489EDS/07 SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers PACKAGE: PLASTIC DUAL–IN–LINE (NARROW 0.015" min. (0.381min ...

Page 9

SP488E/489EDS/07 SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers PACKAGE: PLASTIC SMALL OUTLINE (SOIC) (WIDE) H DIMENSIONS (Inches) Minimum/Maximum 16–PIN (mm) A 0.093/0.104 (2.352/2.649) A1 0.004/0.012 (0.102/0.300) B 0.013/0.020 (0.330/0.508) D 0.398/0.413 (10.10/10.49) E 0.291/0.299 (7.402/7.600) ...

Page 10

... Model ........................ Enable/Disable ...................................... Temperature Range ........................ Package SP488ECP ............... Common; active Low and Active High .. +70 C .................... 16–pin Plastic DIP SP488ECT ................ Common; active Low and Active High .. +70 C ............................. 16–pin SOIC SP488EEP ................ Common; active Low and Active High .. – +85 C ................ 16–pin Plastic DIP SP488EET ................ Common ...

Related keywords