Interface

Overview

The ISL4260E contains 3. 0V to 5. 5V powered RS‑232 transmitters/receivers that meet ElA/TIA-232 and V. 28/V. 24 specifications, even at VCC = 3. 0V. Targeted applications are PDAs, Palmtops, and cell phones where the low operational power consumption and even lower standby power consumption is critical. Efficient on-chip charge pumps coupled with a manual powerdown function reduces the standby supply current to a 150nA trickle. The 5mm x 5mm Quad Flat No-Lead (QFN) packaging and the use of small, low value capacitors ensure board space savings. Data rates greater than 250kbps are ensured at worst case load conditions. The ISL4260E features a VL pin that adjusts the logic pin output levels (see Pin Descriptions) and input thresholds to values compatible with the VCC powering the external logic (for example, a UART). The single pin powerdown function (SHDN = 0) disables all the receiver and transmitter outputs while shutting down the charge pump to minimize supply current drain. Application Note AN9863 summarizes the features of each device comprising the 3V RS-232 family.

ISL4260E Functional Diagram
ISL4260E Functional Diagram
  • Available in near chip scale QFN (5mmx5mm) package
  • VL pin for compatibility with mixed voltage systems
  • ESD protection for RS-232 I/O pins to ±15kV (IEC61000)
  • Single SHDN pin disables transmitters and receivers
  • Meets EIA/TIA-232 and V.28/V.24 specifications at 3V
  • On-chip charge pumps require only four external 0.1µF capacitors
  • Receiver hysteresis for improved noise immunity
  • Very low supply current: 300µA
  • Guaranteed minimum data rate: 250kbps
  • Wide power supply range: Single +3V to +5.5V
  • Low supply current in powerdown state: 150nA
  • Pb-free (RoHS compliant)

Applications

  • Any System Requiring RS-232 Communication Ports Battery Powered, Hand-Held, and Portable Equipment Laptop Computers, Notebooks, Palmtops Digital Cameras PDAs and PDA Cradles Cellular/Mobile Phones

Documentation

Title Type Date
ISL4260E Datasheet
PDF299 KB
Datasheet
AN1978: Surge Protection for Renesas' Standard RS-485 Transceivers
PDF365 KB
Application Note
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E
PDF207 KB
Application Note
AN1979: Surge Protection simplified with Renesas' Overvoltage Protected (OVP) Transceivers
PDF474 KB
Application Note
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses
PDF178 KB
Application Note
AN1992: Isolating RS-232 Interfaces with High-Speed Digital Optocouplers
PDF395 KB
Application Note
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers
PDF513 KB
Application Note
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses
PDF443 KB
Application Note
AN1986: External Fail-Safe Biasing of RS-485 Networks
PDF582 KB
Application Note
AN1989: RS-422 vs RS-485: Similarities and Key Differences
PDF440 KB
Application Note
AN1976: Important Transient Immunity Tests for RS-485 Networks
PDF338 KB
Application Note
AN1977: Transient Voltage Suppressors: Operation and Features
PDF365 KB
Application Note
AN1980: Ground Potential Differences: Origin and Remedies
PDF375 KB
Application Note
AN9863: 3V to +5.5V, 250k-1Mbps, RS-232 Transmitters/Receivers
PDF372 KB
Application Note
Analog ICs Brochure
PDF4.91 MB日本語
Brochure
Transceivers Brochure
PDF2.95 MB
Brochure
PA10066 - Data Sheet Specification Correction for the Listed Intersil ISL4260* QFN Packaged Products
PDF172 KB
Product Advisory
R70TB0002: Understanding the Differences in ESD Device-Level Testing
PDF188 KB
Technical Brief
How to Simplify Industrial PC Interfaces
PDF920 KB 简体中文
White Paper

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models

Models

Title Type Date
isl4260e-design-model
IBS37 KB
Model - IBIS

Product Options

    Processing table
    Part Number
    Pkg. Type
    Carrier Type
    MOQ
    Buy / Sample
    ISL4260EIRZ
    play_circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 QFN Tube 600 Get Samples,
    ISL4260EIRZ-T
    play_circleActive
    memory
    spa
    view_in_ar
    		QFN Reel 6000
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product

    Support

    Contact Technical Support
    Get Samples
    RS 485, RS 422, & RS 232 FAQs
    Interface & Connectivity Forum
    Contact a Sales Representative