DS36C280_14 Datasheet, PDF (1/16 Pages) Texas Instruments – DS36C280 Slew Rate Controlled CMOS EIA-RS-485 Transceiver

DS36C280
www.ti.com
SNLS097C – JULY 2000 – REVISED FEBRUARY 2013
DS36C280 Slew Rate Controlled CMOS EIA-RS-485 Transceiver
Check for Samples: DS36C280
FEATURES
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•2 100% RS-485 Compliant
– Guaranteed RS-485 Device Interoperation
• Low Power CMOS Design: I_CC 500 μA max
• Adjustable Slew Rate Control
– Minimizes EMI Effects
• Built-In Power Up/Down Glitch-Free Circuitry
– Permits Live Transceiver
Insertion/Displacement
• SOIC Packages
• Industrial Temperature Range: −40°C to
+85°C
• On-board Thermal Shutdown Circuitry
– Prevents Damage to the Device in the Event
of Excessive Power Dissipation
• Wide Common Mode Range: −7V to +12V
• Receiver Open Input Fail-safe ⁽¹⁾
• ¼ unit load (DS36C280): ≥128 nodes
• ½ unit load (DS36C280T): ≥64 nodes
• ESD (human body model): ≥2 kV
(1) Non-terminated, Open Inputs only
DESCRIPTION
The 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 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 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. I_CC is specified at 500 μA
maximum.
The 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 receiver incorporates a fail safe circuit which
guarantees a high output state when the inputs are
left open ⁽¹⁾.
Connection and Logic Diagram
Figure 1. See Package Number D (R-PDSO-G8)
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PRODUCTION DATA information is current as of publication date.
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