DS3695N National Semiconductor, DS3695N Datasheet

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DS3695N

Manufacturer Part Number
DS3695N
Description
IC, RS-422/RS-485 TRANSCEIVER, 5V, DIP-8
Manufacturer
National Semiconductor
Datasheet

Specifications of DS3695N

Device Type
Transceiver
Ic Interface Type
RS422, RS485
No. Of Drivers
1
Supply Voltage Range
4.75V To 5.25V
Driver Case Style
DIP
No. Of Pins
8
Operating Temperature Range
0°C To +70°C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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© 2004 National Semiconductor Corporation
DS3695/DS3695T/DS3696/DS3697
Multipoint RS485/RS422 Transceivers/Repeaters
General Description
The DS3695, DS3696, and DS3697 are high speed differ-
ential TRI-STATE
to meet the requirements of EIA standard RS485 with ex-
tended common mode range (+12V to −7V), for multipoint
data transmission.
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 DS3696 provides an output pin
TS (thermal shutdown) which reports the occurrence of the
thermal shutdown of the device. This is an “open collector”
pin with an internal 10 kΩ pull-up resistor. This allows the line
fault outputs of several devices to be wire OR-ed.
Both AC and DC specifications are guaranteed over the 0˚C
to 70˚C temperature and 4.75V to 5.25V supply voltage
range.
Connection and Logic Diagrams
Note 1: TS pin was LF (Line Fault) in previous datasheets and reports the occurrence of a thermal shutdown of the device.
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
Order Number DS3695N, DS3695TN, DS3696N, or DS3697NSee NS Package Number N08E
®
bus/line transceivers/repeaters designed
Top View
Top View
DS010408
01040801
01040812
Features
n Meets EIA standard RS485 for multipoint bus
n 15 ns driver propagation delays with 2 ns skew (typical)
n Single +5V supply
n −7V to +12V bus common mode range permits
n Thermal shutdown protection
n High impedance to bus with driver in TRI-STATE or with
n Combined impedance of a driver output and receiver
n 70 mV typical receiver hysteresis
transmission and is compatible with RS-422
ground difference between devices on the bus
power off, over the entire common mode range allows
the unused devices on the bus to be powered down
input is less than one RS485 unit load, allowing up to 32
transceivers on the bus
Top View
01040813
www.national.com
May 1998
±
7V

Related parts for DS3695N

DS3695N Summary of contents

Page 1

... Connection and Logic Diagrams Top View Top View Order Number DS3695N, DS3695TN, DS3696N, or DS3697NSee NS Package Number N08E Note 1: TS pin was LF (Line Fault) in previous datasheets and reports the occurrence of a thermal shutdown of the device. TRI-STATE ® registered trademark of National Semiconductor Corporation. ...

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 Voltages Driver Input Voltage Driver Output Voltages Receiver Input Voltages (DS3695, DS3696) Receiver Common Mode Voltage (DS3697) ...

Page 3

Electrical Characteristics 0˚C ≤ T ≤ +70˚C, 4.75V < < V 5.25V unless otherwise specified A CC Symbol Parameter I Supply Current CC I Driver Short-Circuit Output Current OSD I Receiver Short-Circuit Output Current OSR Note 2: “Absolute Maximum Ratings” ...

Page 4

AC Test Circuits and Switching Waveforms Note: Differential input voltage may be realized by grounding RI and pulsing RI between +2.5V and −2.5V. FIGURE 3. Receiver Input-to-Output Propagation Delay Timing FIGURE 4. Receiver Enable/Disable Propagation Delay Timing www.national.com FIGURE 1. ...

Page 5

AC Test Circuits and Switching Waveforms Note: Unless otherwise specified the switches are closed. FIGURE 5. Driver Propagation Delay and Transition Time Test Circuits Note: t and t are measured to the respective 50% points. t PLH PHL FIGURE 6. ...

Page 6

AC Test Circuits and Switching Waveforms Function Tables Inputs Inputs E RI-RI ≥ +0.2V 1 ≤ −0. ≥ +0.2V 1 ≤ −0.2V 1 ...

Page 7

Typical Application Note: Repeater control logic not shown, see AN-702. Typical Performance Characteristics Driver Temperature OH Driver Temperature OL Driver 01040819 Driver V 01040821 7 01040811 ...

Page 8

Typical Performance Characteristics Driver Differential Propagation Delay vs Temperature Driver Single-Ended Propagation Delay vs Temperature Driver Transition Time vs Temperature www.national.com (Continued) Driver Differential Propagation 01040823 Driver Single-Ended Propagation 01040825 01040827 8 Delay 01040824 Delay vs V ...

Page 9

Typical Performance Characteristics Cable Length vs Data Rate Supply Current vs Power Supply Voltage Driver Short Circuit Current vs Temperature (Continued) 01040829 01040831 01040833 9 Supply Current vs Temperature 01040830 Driver I vs Switching CC Frequency 01040832 Receiver V vs ...

Page 10

Typical Performance Characteristics Receiver Receiver Temperature Receiver Temperature www.national.com (Continued) vs 01040835 OH 01040834 OL 01040836 10 Driver Short Circuit Current vs Temperature ...

Page 11

Typical Performance Characteristics Receiver Differential Propagation Delay vs Temperature Receiver Short Circuit Current vs Temperature Receiver Non-Inverting Input Current vs Temperature (Continued) 01040838 01040840 01040842 11 Receiver Differential Propagation Delay 01040839 Receiver Short Circuit Current vs Power ...

Page 12

Typical Performance Characteristics Receiver Inverting Input Current vs Temperature Hysteresis and Differential Transition Voltage vs Temperature www.national.com (Continued) Power Supply Voltage 01040844 Differential Transition 01040846 12 Receiver Inverting Input Current vs 01040845 Hysteresis and Voltage 01040847 ...

Page 13

... Physical Dimensions inches (millimeters) unless otherwise noted Order Number DS3695N, DS3696N, DS3697N, or DS3695TN National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. ...

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