Features: 100% RS-485 compliant
- Guaranteed RS-485 device interoperation
Low power CMOS design: ICC 500 µA max
Adjustable slew rate control
- Minimizes EMI affects
Built-in power up/down glitch-free circuitry
- Permits live transceiver insertion/displacement
DIP and SOIC packages available
Industrial temperature range: −40˚C to +85˚C
On-board thermal shutdown circuitry
- Prevents damage to the device in the event ofexcessive power dissipation
Wide common mode range: −7V to +12V
Receiver open input fail-safe (Note 1)
1⁄4 unit load (DS36C280): 128 nodes
1⁄2 unit load (DS36C280T): 64 nodes
ESD (human body model): 2kVSpecifications
| Function |
Transceiver |
| Channels |
1 Channels |
| SupplyVoltage |
5 Volt |
| Process |
CMOS |
| Special Features |
Slew Rate Control |
| Temperature Min |
0 deg C |
| Temperature Max |
70 deg C |
| JTAG1149.1 |
No |
| Drivers |
1 |
| Receivers |
1 |
| View Using Catalog |
Supply Voltage (VCC) .................................... ..+12V
nput Voltage (DE/RE*, & DI ........−0.5V to (VCC +0.5V)
Common Mode (VCM)
Driver Output/Receiver Input............................ ±15V
nput Voltage (DO/RI, DO*/RI*) ............................±14V
Receiver Output Voltage ..............−0.5V to (VCC +0.5V)
Maximum Package Power Dissipation @.............. +25˚C
M Package 1190 mV, derate 9.5 mW/˚C above ... .+25˚C
N Package 794 mV, derate 6.0 mW/˚C above..... . +25˚C
Storage Temperature Range ...............−65˚C to +150˚C
Lead Temperature ..............................................+260˚C
(Soldering 4 sec.)DescriptionThe DS36C280 is a low power differential bus/line transceiver designed to meet the requirements of RS-485 Standard for multipoint data transmission. In addition, it is compatible with TIA/EIA-422-B.
The DS36C280 slew rate control feature allows the user to set the driver rise and fall times by using an external resistor. Controlled edge rates can reduce switching EMI.
The DS36C280 CMOS design offers significant power savings over its bipolar and ALS counterparts without sacrificing ruggedness against ESD damage. The device is ideal for use in battery powered or power conscious applications. ICC is specified at 500 µA maximum.
The DS36C280 driver and receiver outputs feature TRI-STATE® capability. The driver outputs operate over the entire common mode range of -7V to +12V. Bus contention or fault situations are handled by a thermal shutdown circuit, which forces the driver outputs into the high impedance state.
The DS36C280 receiver incorporates a fail safe circuit which guarantees a high output state when the inputs are left open .
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| DS36C280M |
LMDMOS |
0 |
16810 |
0 |
0 |
2200000 |
2 |
624256007 |
| DS36C280MX |
LMDMOS |
0 |
16810 |
0 |
0 |
2200000 |
2 |
624256007 |
| DS36C280TM |
LMDMOS |
0 |
16810 |
0 |
0 |
2200000 |
2 |
624256007 |
| DS36C280TMX |
LMDMOS |
0 |
16810 |
0 |
0 |
2200000 |
2 |
624256007 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1057: Application Note 1057 Ten Ways to Bulletproof RS-485 Interfaces |
155 Kbytes |
2-Oct-02 |
Download |
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|
DS36C280 Data Sheet
