SP3488CP SIPEX [Sipex Corporation], SP3488CP Datasheet

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SP3488CP

Manufacturer Part Number
SP3488CP
Description
+3.3V Low Power Quad RS-485/RS-422 Line Receivers
Manufacturer
SIPEX [Sipex Corporation]
Datasheet
1.SP3488CP.pdf (9 pages)
DESCRIPTION…
The SP3488 and the SP3489 are +3.3V low power quad line receivers that meet the
specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin
compatible with Sipex's SP488 and SP489 devices as well as popular industry standards.
The SP3488 and SP3489 feature Sipex's BiCMOS process allowing low power operation
without sacrificing performance. The SP3488 and SP3489 meet the electrical specifications
of RS-485 and RS-422 serial protocols up to 10Mbps under load. The SP3488 features a
common receiver enable control. The SP3489 provides independent receiver enable
controls for each pair of receivers. Both devices feature tri-state outputs and a -7V to +12V
common-mode input range. The receivers have a fail-safe feature which forces a logic "1"
output when receiver inputs are left floating.
10/16/02
RS-485 or RS-422 Quad Differential
Line Receivers
Operates from a single +3.3V supply
Interoperable with +5.0V logic
Tri-state Output Control
-7V to +12V Common-Mode Input
Voltage Range
Common Driver Enable Control
(SP3488)
Independent Driver Enable Controls
for each pair of Drivers (SP3489)
Compatibility with LTC488
and SN75173 (SP3488)
Compatibility with LTC489
and SN75175 (SP3489)
GND
RI
RI
RI
RI
RO
RO
EN
1
1
2
2
B
A
A
B
1
2
1
2
3
4
5
6
7
8
SP3488/3489 Low Power Quad RS-485/422 Line Receivers
®
1
2
SP3488
RS-485/RS-422 Line Receivers
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
A
B
4
3
1
EN
+3.3V Low Power Quad
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
SP3488 and SP3489
1
2
SP3489
3
4
© Copyright 2002 Sipex Corporation
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

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SP3488CP Summary of contents

Page 1

RS-485 or RS-422 Quad Differential Line Receivers Operates from a single +3.3V supply Interoperable with +5.0V logic Tri-state Output Control -7V to +12V Common-Mode Input Voltage Range Common Driver Enable Control (SP3488) Independent Driver Enable Controls for each pair ...

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 DI 54Ω B 15pF 1/4 SP3486 1/4 SP3488 Figure 1. Timing Test Circuit SP3488 PINOUT Pin 1 — — Receiver 1 input B. 1 Pin 2 — Receiver 1 input A. ...

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 output is low. ...

Page 5

RS-485 transceivers are equipped with a wide (-7V to +12V) common mode range to accomodate ground potential differences. Because the RS-485 protocol is a differential interface, data is virtually immune to noise ...

Page 6

OD Input A–B – PHL Figure 3. Receiver Propagation Delays Figure 4. Receiver Enable/Disable Timing 10/16/02 SP3488/3489 ...

Page 7

D1 = 0.005" min. (0.127 min 0.100 BSC (2.540 BSC) ALTERNATE END PINS (BOTH ENDS) DIMENSIONS (Inches) Minimum/Maximum 16–PIN (mm) A2 0.115/0.195 (2.921/4.953) 0.014/0.022 B (0.356/0.559) B1 0.045/0.070 (1.143/1.778) C 0.008/0.014 (0.203/0.356) 0.780/0.800 D (19.812/20.320) E 0.300/0.325 ...

Page 8

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) e 0.050 BSC (1.270 BSC) H 0.394/0.419 (10.00/10.64) L 0.016/0.050 (0.406/1.270) Ø 0°/8° (0°/8°) 10/16/02 ...

Page 9

... Quad RS485 Receivers: Model .................................... Enable/Disable ........................................................... Temperature Range ................................................ Package SP3488CP ........................... Common; active Low and Active High ...................... 0°C to +70°C ........................................... 16–pin Plastic DIP SP3488CT ............................ Common; active Low and Active High ...................... 0°C to +70°C .................................................... 16–pin SOIC SP3488EP ............................ Common; active Low and Active High ...................... –40°C to +85°C ....................................... 16–pin Plastic DIP SP3488ET ............................ Common ...

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