The EL5421T is a high voltage rail-to-rail input-output buffer with low power consumption. The EL5421T contains four buffers. Each buffer exhibits beyond the rail input capability, rail-to-rail output capability and is unity gain stable. The maximum operating voltage range is from 4. 5V to 19V. It can be configured for single or dual supply operation, and typically consumes only 500µA per buffer. The EL5421T has an output short circuit capability of ±200mA and a continuous output current capability of ±70mA. The EL5421T features a slew rate of 12V/µs. Also, the device provides common mode input capability beyond the supply rails, rail-to-rail output capability, and a bandwidth of 12MHz (-3dB). This enables the buffers to offer maximum dynamic range at any supply voltage. These features make the EL5421T an ideal buffer solution for use in TFT-LCD panels as a VCOM or static gamma buffer, and in High-Speed filtering and signal conditioning applications. Other applications include battery power and portable devices, especially where low power consumption is important. The EL5421T is available in a space saving 10 Ld MSOP package and operates over an ambient temperature range of -40°C to +85°C.


  • 12MHz -3dB bandwidth
  • 4 Unity Gain Buffers
  • 4.5V to 19V Maximum Supply Voltage Range
  • 12V/µs Slew Rate
  • 500µA Supply Current (per buffer)
  • ±70mA Continuous Output Current
  • ±200mA Output Short Circuit Current
  • Unity-gain Stable
  • Beyond the Rails Input Capability
  • Rail-to-rail Output Swing
  • Built-in Thermal Protection
  • -40°C to +85°C Ambient Temperature Range
  • Pb-free (RoHS compliant)


  • TFT-LCD Panels
  • VCOM Buffers
  • Electronics Notebooks
  • Electronics Games
  • Personal Communication Devices
  • Personal Digital Assistants (PDA)
  • Portable Instrumentation
  • Wireless LANs
  • Office Automation
  • Active Filters
  • ADC/DAC Buffers

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active MSOP Tube 50
Active MSOP Reel 2500
Active MSOP Reel 1500

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
EL5421T Datasheet Datasheet PDF 673 KB
Application Notes & White Papers
AN1993: Voltage Feedback versus Current Feedback Operational Amplifiers Application Note PDF 564 KB
AN1694: The Four Basic Building Blocks of an Op Amp Application Note PDF 357 KB
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP) Product Change Notice PDF 98 KB
PCN12084 - Manufacturing Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh Malaysia Product Change Notice PDF 135 KB
PCN11059 - Shipping Tube Change for Intersil MSOP Packaged Products Product Change Notice PDF 117 KB
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB