MAX6951

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


Please check latest availability status for a specific part variant.

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.
MAX6950, MAX6951: Typical Application Circuit MAX6950, MAX6951: Typical Application Circuit Enlarge+

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

Applications/Uses

  • Bar Graphs and Matrix Displays
  • Industrial Controllers and Instrumentation
  • Medical Equipment
  • Panel Meters
  • Professional Audio Equipment
  • Set-Top Boxes
  • White Goods
Part NumberLCD or LEDDigits or Char.Output FormatDisplay TypeInterfaceFontsSegment BlinkingVSUPPLY
(V)
VSUPPLY
(V)
Package/PinsBudgetary
Price
minmaxSee Notes
MAX6950 LED5-Digit7 segment + DPCommon CathodeSerial SPI 26MbitHexadecimalYes2.75.5
QSOP/16
$5.62 @1k
MAX6951 8-Digit
QSOP/16
$5.75 @1k
See All Display Drivers (47)
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.


MAX6951EVKIT: MAX6951 Evaluation Kit
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources

Type ID Title
Evaluation Board3221MAX6951EVKIT MAX6951 Evaluation Kit