DS3862WMX National Semiconductor, DS3862WMX Datasheet

IC TXRX OCTAL HS TRAP BUS 20SOIC

DS3862WMX

Manufacturer Part Number
DS3862WMX
Description
IC TXRX OCTAL HS TRAP BUS 20SOIC
Manufacturer
National Semiconductor
Type
Transceiverr
Datasheet

Specifications of DS3862WMX

Number Of Drivers/receivers
8/8
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Protocol
-
Other names
*DS3862WMX
© 1999 National Semiconductor Corporation
DS3862
Octal High Speed Trapezoidal Bus Transceiver
General Description
The DS3862 is an octal high speed schottky bus transceiver
intended for use with terminated 120
specifically designed to reduce noise in unbalanced trans-
mission systems. The open collector drivers generate pre-
cise trapezoidal waveforms with rise and fall times of 9 ns
(typical), which are relatively independent of capacitive load-
ing conditions on the outputs. This reduces noise coupling to
the adjacent lines without any appreciable impact on the
maximum data rate obtainable with high speed bus trans-
ceivers. In addition, the receivers use a low pass filter in con-
junction with a high speed comparator, to further enhance
the noise immunity. Tightly controlled threshold levels on the
receiver provide equal rejection to both negative and positive
going noise pulses on the bus.
The external termination is intended to be a 180
from the bus to 5V logic supply, together with a 390 resistor
from the bus to ground. The bus can be terminated at one or
both ends.
Logic and Connection Diagram
Order Number DS3862J, DS3862N or DS3862WM
impedance lines. It is
See NS Package Number J20A, N20A or M20B
DS008539
resistor
Features
n Guaranteed A.C. specifications on noise immunity and
n Temperature insensitive receiver thresholds track bus
n Trapezoidal bus waveforms reduce noise coupling to
n Open collector driver output allows wire-or connection
n Advanced low power schottky technology
n Glitch free power up/down protection on driver and
n TTL compatible driver and control inputs, and receiver
n Control logic is the same as the DS3896
propagation delay over the specified temperature and
supply voltage range
logic level and respond symmetrically to positive and
negative going pulses
adjacent lines
receiver outputs
outputs
DS008539-1
February 1995
www.national.com

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DS3862WMX Summary of contents

Page 1

... The bus can be terminated at one or both ends. Logic and Connection Diagram Order Number DS3862J, DS3862N or DS3862WM See NS Package Number J20A, N20A or M20B © 1999 National Semiconductor Corporation DS008539 Features n Guaranteed A.C. specifications on noise immunity and propagation delay over the specified temperature and ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Control Input Voltage Driver Input and Receiver Output Receiver Input and Driver Output Power Dissipation Electrical Characteristics 0˚C T 70˚C, 4.75V V 5 ...

Page 3

Switching Characteristics 0˚C T 70˚C, 4.75V V 5.25V unless otherwise specified A CC Symbol Parameter Receiver 0.8V, T/R = 0.8V ( Figure RLH t RHL Bn = 2.0V, T/R = 0.8V, CL ...

Page 4

Switching Waveforms (Continued Note from 10 FIGURE 2. Propagation Delay From T/R Pin Bn Note from 10 www.national.com FIGURE ...

Page 5

Switching Waveforms (Continued Note from 10 FIGURE 4. Propagation Delay From CD Pin from 10% to 90% Note FIGURE 5. Receiver ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted www.national.com Ceramic Dual-In-Line Package (J) Order Number DS3862J NS Package J20A 20-Lead Molded Small Outline Package (M) Order Number DS3862WM NS Package M20B 6 ...

Page 7

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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