ISL32601EFBZ Datasheet, PDF (1/23 Pages) Intersil Corporation – 1.8V to 3.3V, Micro-Power, ±15kV ESD, +125°C, Slew Rate Limited, RS-485/RS-422 Transceivers

1.8V to 3.3V, Micro-Power, ±15kV ESD, +125°C, Slew
Rate Limited, RS-485/RS-422 Transceivers
ISL32600E, ISL32601E, ISL32602E, ISL32603E
The Intersil ISL32600E, ISL32601E, ISL32602E and
ISL32603E are ±15kV IEC61000 ESD protected, micro power,
wide supply range transceivers for differential communication.
The ISL32600E and ISL32601E operate with V_CC ≥ 2.7V and
have maximum supply currents as low as 100µA with both the
transmitter (Tx) and receiver (Rx) enabled. The ISL32602E and
ISL32603E operate with supply voltages as low as 1.8V. These
transceivers have very low bus currents, so they present less
than a “1/8 unit load” to the bus. This allows more than 256
transmitters on the network, without violating the RS-485
specification’s 32 unit load maximum.
Features
• Single 1.8V, 3V, or 3.3V Supply
• Low Supply Currents . . . . . . . ISL32601E, 100µA (Max) @ 3V
. . . . . . ISL32603E, 150µA (Max) @ 1.8V
- Ultra Low Shutdown Supply Current . . . . . . . . . . . . . . 10nA
• IEC61000 ESD Protection on RS-485 I/O Pins . . . . . . ±15kV
- Class 3 ESD Levels on all Other Pins . . . . . . . . . >8kV HBM
• Symmetrical Switching Thresholds for Less Duty Cycle
Distortion (See Figure 9)
Rx inputs feature symmetrical switching thresholds, and up to
65mV of hysteresis, to improve noise immunity and to reduce
duty cycle distortion in the presence of slow moving input
signals (see Figure 9). The Rx input common mode range is the
full -7V to +12V RS-485 range for supply voltages ≥ 3V.
• Up to 65mV Hysteresis for Improved Noise Immunity
• Data Rates from 128kbps to 460kbps
• Specified for +125°C Operation
• 1/8 Unit Load Allows up to 256 Devices on the Bus
Hot Plug circuitry ensures that the Tx and Rx outputs remain in
a high impedance state while the power supply stabilizes.
This transceiver family utilizes slew rate limited drivers, which
reduce EMI, and minimize reflections from improperly terminated
transmission lines, or unterminated stubs in multidrop and
multipoint applications.
• -7V to +12V Common Mode Input/Output Voltage Range
(V_CC ≥ 3V)
• Half and Full Duplex Pinouts; Three State Rx and Tx Outputs
• 5V Tolerant Logic Inputs
• Tiny MSOP Packages Consume 50% Less Board Space
The ISL32600E and ISL32602E are configured for full duplex
(separate Rx input and Tx output pins) applications. The half
duplex versions multiplex the Rx inputs and Tx outputs to allow
transceivers with output disable functions in 8 Ld packages.
See Table 1 for a summary of each device’s features.
Applications
• Differential Sensor Interfaces
• Process Control Networks
• Security Camera Networks
• Building Environmental Control/Lighting Systems
ISL3172E DYNAMIC (9.6kbps)
1m
ISL3172E STATIC
100µ
ISL3260XE DYNAMIC (9.6kbps)
ISL3260XE STATIC
DE = V_CC, RE = GND
10µ
25°C, R_D = ∞, C_D = 50pF
2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5 3.6
SUPPLY VOLTAGE (V)
FIGURE 1. ISL32600E AND ISL32601E HAVE A 9.6kbps
OPERATING I_CC LOWER THAN THE STATIC I_CC OF
MANY EXISTING 3V TRANSCEIVERS
10m
DE = V_CC, RE = GND
25°C, R_D = ∞, C_D = 50pF
DYNAMIC (256kbps)
DYNAMIC (128kbps)
1m
STATIC
100µ
1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
SUPPLY VOLTAGE (V)
FIGURE 2. ISL32602E AND ISL32603E WITH V_CC = 1.8V REDUCE
OPERATING I_CC BY A FACTOR OF 25 TO 40,
COMPARED WITH I_CC AT V_CC = 3.3V
June 22, 2012
1
FN7967.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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