MAX6950, MAX6951

Serially Interfaced, +2.7V to +5.5V, 5- and 8-Digit LED Display Drivers

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Status Explanations for product status codes

Part Number Status
MAX6950 Active: In Production. See Ordering Information for details.
MAX6951 Active: In Production. See Ordering Information for details.

Description

The MAX6950/MAX6951 are compact common-cathode display drivers that interface microprocessors to individual 7-segment numeric LED digits, bar graph, or discrete LEDs through an SPI™-, QSPI™-, MICROWIRE™-compatible serial interface. The supply voltage can be as low as 2.7V.

The MAX6950 drives up to five 7-segment digits or 40 discrete LEDs. The MAX6951 drives up to eight 7-segment digits or 64 discrete LEDs.

Included on-chip are hexadecimal character decoders (0-9, A-F), multiplex scan circuitry, segment and digit drivers, and a static RAM that stores each digit. The user may select hexadecimal decoding or no-decode for each digit to allow any mix of 7-segment digits, bar graph, or discrete LEDs to be driven. The segment current for the LEDs is set by an internal digital brightness control. The segment drivers are slew-rate limited to reduce EMI.

Individual digits may be addressed and updated without rewriting the entire display. The devices include a low-power shutdown mode, digital brightness control, a scan-limit register that allows the user to display from one to eight digits, segment blinking that can be synchronized across drivers, and a test mode that forces all LEDs on.

Data Sheet

Download this datasheet in PDF formatDownload Rev 2 (PDF, 244kB)
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An evaluation board is available: MAX6951EVKIT

Key Features

  • High-speed 26MHz SPI-, QSPI-, MICROWIRE-Compatible Serial Interface
  • +2.7V to +5.5V Operation
  • Individual LED Segment Control
  • Segment Blinking Control that Can Be Synchronized Across Multiple Drivers
  • Hexadecimal Decode/No-Decode Digit Selection
  • Digital Brightness Control
  • Display Blanked on Power-Up
  • Drives Common-Cathode LED Digits
  • Multiplex Clock Syncronizable to External Clock
  • Slew-Rate Limited Segment Drivers for Low EMI
  • 75µA Low-Power Shutdown (Data Retained)
  • Small 16-Pin QSOP Package
  • Underwriters Laboratories (UL) Recognized
 

Applications/Uses

  • Bar Graphs and Matrix Displays
  • Industrial Controllers and Instrumentation
  • Medical Equipment
  • Panel Meters
  • Professional Audio Equipment
  • Set-Top Boxes
  • White Goods
   

Key Specifications:

Display Drivers
Part Number LCD or LED Digits or Char. Output Format Display Type Interface Fonts Segment Blinking VSUPPLY
(V)
VSUPPLY
(V)
Budgetary
Price
min max See Notes
MAX6950  LED 5-Digit 7 segment + DP Common Cathode Serial SPI 26Mbit Hexadecimal Yes 2.7 5.5 $4.50 @1k
MAX6951  8-Digit $4.81 @1k
See All Display Drivers (48)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.



Diagram

MAX6950, MAX6951: Typical Application Circuit
Typical Application Circuit

More Information

New Product Press Release   2001-12-04 ]

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Information Index

Document Ref.: 19-2227 Rev 2; 2005-04-18
This page last modified: 2007-07-03