DS3696A

Features:

Meets EIA standard RS485 for multipoint bus transmission and is compatible with RS-422
10 ns driver propagation delays (typical)
Single +5V supply
-7V to +12V bus common mode range permits ±7V ground difference between devices on the bus
Thermal shutdown protection
High impedance to bus with driver in TRI-STATE or with power off, over the entire common mode range allows the unused devices on the bus to be powered down
Combined impedance of a driver output and receiver input is less than one RS485 unit load, allowing up to 32 transceivers on the bus
70 mV typical receiver hysteresis
Available in SOIC packaging


Specifications

If Military/Aerospace specified devices are required,pleasecontacttheNationalSemiconductorSalesOffice/Distributors for availability and specifications.
Supply Voltage, VCC                                                       7V
Control Input Voltages                                                   7V
Driver Input Voltage                                                       7V
Driver Output Voltages                                      +15V/-10V
Receiver Input Voltages                                    +15V/-10V
Receiver Output Voltage                                             5.5V
Continuous Power Dissipation 25
M Package                                               630 mW (Note 4)
Storage Temp. Range                                -65 to +150
Lead Temp. (Soldering 4 seconds)                            260


Description

The DS3695A and DS3696A are high speed differential TRI-STATE bus/line transceivers designed to meet the re-quirements of EIA standard RS485 with extended common mode range (+12V to -7V), for multipoint data transmission.Inaddition they are compatible with requirements of RS-422.

The driver and receiver outputs feature TRI-STATE capabil-ity. The driver outputs remain in TRI-STATE over the entire common mode range of +12V to -7V. Bus faults that cause excessive power dissipation within the device trigger a ther-mal shutdown circuit, which forces the driver outputs into the high impedance state. The DS3696Aprovides an output pin (TS) which reports the thermal shutdown of the device.TS is an"opencollector"pinwithaninternal10kpull-upresistor.This allows the TS outputs of several devices to be wire OR-ed.

BothAC and DC specifications of DS3696A are guaranteed over the 0 to 70  temperature and 4.75V to 5.25V supply voltage range.