ISL32611EFHZ-T7A Intersil Corporation, ISL32611EFHZ-T7A Datasheet

ISL32611EFHZ-T7A

Manufacturer Part Number

ISL32611EFHZ-T7A

Description

Manufacturer

Intersil Corporation

Datasheet

1.ISL32610E.pdf (12 pages)

Specifications of ISL32611EFHZ-T7A

Pack_quantity

250

Comm_code

85423990

Lead_time

Current page: 1 of 12
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±16.5kV ESD Protected, 1.8V, Micro Power, +125°C,

1/8 Unit Load, RS-485/RS-422 Differential Receivers

ISL32610E, ISL32611E, ISL32612E

The ISL32610E, ISL32611E, ISL32612E are ±16.5kV

IEC61000 ESD protected, fractional unit load (UL), 1.8V

powered, single differential receivers (Rx) for balanced (e.g.,

RS-485) data communication. With their 85µA supply

currents, these receivers are optimized for low power

applications, and deliver the lowest supply currents of any

available single Rx IC (see Figure 1).

To improve performance in low data rate applications with

slow signal transitions, these Rx feature symmetrical switching

points (±200mV) and increased hysteresis. The symmetrical

switching points eliminate the duty cycle distortion introduced

by “full-failsafe” type receivers (see Figure 2), while the larger

hysteresis increases noise immunity.

Receivers present a 1/8 “unit load” to the data bus, which

allows up to 256 devices on the network for large node count

systems (e.g., process automation, remote meter reading

systems). The ISL32611E/ISL32612E Rx output is tri-statable

via the RE/RE input.

Receiver inputs feature a “failsafe-if-open” design, which

ensures a logic high Rx output if Rx inputs are floating. Data

rates up to 256kbps are achievable with this device at

See Table 1 for a summary of each device’s features. For a

companion 1.8V differential transmitter in a SOT-23 package,

reference the

October 21, 2011

FN7869.0

FIGURE 1. ISL3261XE REDUCES OPERATING I

500

450

400

350

300

250

200

150

100

= 1.8V.

1.8

2.0

ISL32613E

4 FROM PREVIOUS GENERATION RECEIVER ICs, AND

OPERATES WITH SUPPLY VOLTAGES AS LOW AS 1.8V

2.2

ISL3282E

2.4

DYNAMIC (256kbps)

data sheet.

STATIC

2.6

(V)

2.8

DYNAMIC (256kbps)

STATIC

3.0

BY A FACTOR OF

3.2

ISL3261XE

3.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

3.6

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

Features

• Wide Supply Voltage Range . . . . . . . . . . . . . . . . . 1.8V to 3.6V

• Ultra Low Quiescent Supply Current . . . . . . . . . 110µA (Max.)

• IEC61000 ESD Protection on RS-485 Bus Pins . . . . ±16.5kV

• Symmetrical Switching Thresholds for Less Duty Cycle

• Larger Hysteresis for Improved Noise Immunity . . . . . 70mV

• Data Rates up to 256kbps (1.8V) or 500kbps (3.3V)

• 1/8 Unit Load Allows up to 256 Devices on the RS-485 Bus

• Specified for +125°C Operation

• Three State Rx Output Available

• 5V Tolerant Logic Inputs

• Pb-Free (RoHS Compliant)

Applications

• Industrial/Process Control Networks, Factory Automation

• High Node Count Networks

• Space Constrained Systems

• Building Environmental Control Systems

FIGURE 2. COMPARED WITH A FULL-FAILSAFE RECEIVER, THE

-1

- Class 3 ESD Level on all Other Pins. . . . . . . . . . >8kV HBM

Distortion (see Figure 2)

All other trademarks mentioned are the property of their respective owners.

A-B

= 3.3V, DATA RATE = 125kbps

SYMMETRICAL RX THRESHOLDS OF THE ISL3261XE

DELIVER LESS OUTPUT DUTY CYCLE DISTORTION

WHEN DRIVEN WITH SLOW INPUT SIGNALS

ISL3282E

ISL3261XE

TIME (4µs/DIV)

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