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.

Features

  • 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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QFN Tube 60
Availability
Active QFN Reel 6000
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL4260E Datasheet Datasheet PDF 299 KB
Application Notes & White Papers
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses Application Note PDF 178 KB
How to Simplify Industrial PC Interfaces 简体中文 White Paper PDF 920 KB
AN1992: Isolating RS-232 Interfaces with High-Speed Digital Optocouplers Application Note PDF 395 KB
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses Application Note PDF 443 KB
AN1986: External Fail-Safe Biasing of RS-485 Networks Application Note PDF 582 KB
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E Application Note PDF 335 KB
AN1989: RS-422 vs RS-485: Similarities and Key Differences Application Note PDF 440 KB
AN1977: Transient Voltage Suppressors: Operation and Features Application Note PDF 365 KB
AN1980: Ground Potential Differences: Origin and Remedies Application Note PDF 375 KB
AN1978: Surge Protection for Intersil's Standard RS-485 Transceivers Application Note PDF 369 KB
AN1976: Important Transient Immunity Tests for RS-485 Networks Application Note PDF 338 KB
AN1979: Surge Protection simplified with Intersil's Overvoltage Protected (OVP) Transceivers Application Note PDF 500 KB
AN9863: 3V to +5.5V, 250k-1Mbps, RS-232 Transmitters/Receivers Application Note PDF 372 KB
Downloads
isl4260e-design-model Model IBS 37 KB
Other
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB
PA10066 - Data Sheet Specification Correction for the Listed Intersil ISL4260* QFN Packaged Products Product Advisory PDF 172 KB