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74C911 - 4-Digit Expandable Segment Display Controller

Description

The MM74C911 display controller is an interface element with memory that drives a 4-digit, 8-segment LED display.

The MM74C911 allows individual control of any segment in the 4-digit display.

The number of segments per digit can be expanded without any external components.

Features

  • s Direct segment drive (100 mA typ. ) 3-STATE s 4 registers addressed like RAM s Internal oscillator and scanning circuit s Direct base drive to digit transistor s Segment expandability without external components s TTL compatible inputs s Power saver mode.
  • 5 µW (typ. ) Ordering Code: Order Number MM74C991N Package Number N28B Package.

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Full PDF Text Transcription

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MM74C911 4-Digit Expandable Segment Display Controller October 1987 Revised January 1999 MM74C911 4-Digit Expandable Segment Display Controller General Description The MM74C911 display controller is an interface element with memory that drives a 4-digit, 8-segment LED display. The MM74C911 allows individual control of any segment in the 4-digit display. The number of segments per digit can be expanded without any external components. For example, two MM74C911’s can be cascaded to drive a 16-segment alpha-numeric display. The display controllers receive data information through 8 data lines a, b…DP, and digit information through 2 address inputs K1 and K2.
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