Part # MAX6958-MAX6959 datasheet

Part Manufacturer: Maxim


Part Description: MAX6958 59 DS

Part Details:

19-2634; Rev 1; 11/05 2-Wire Interfaced, 3V to 5.5V, 4-Digit, 9-Segment LED Display Drivers with Keyscan MAX6958/MAX6959 General Description Features The MAX6958/MAX6959 compact multiplexed com- 400kbps 2-Wire Serial Interface mon-cathode display drivers interface microprocessors 3V to 5.5V Operation to seven-segment numeric LED digits, or discrete LEDs Drive 4 Digits plus 4 or 8 Discrete LEDs through an SMBusTM- and I2C-compatible 2-wire serialinterface. The 2-wire serial interface uses fixed Drive Common-Cathode LED Digits 0.8V/2.1V logic thresholds for compatibility with 2.5V 23mA Constant-Current LED Segment Drive and 3.3V systems when the display driver is powered Hexadecimal Decode/No-Decode Digit Selection from a 5V supply. 64-Step Digital Brightness Control The MAX6958/MAX6959 drive up to four 7-segment Slew-Rate-Limited Segment Drivers Reduced EMI digits, with decimal points, plus four discrete LEDs, orfour 7-segment digits and eight discrete LEDs if the Debounces Up to Eight Switches with n-Key Rollover (MAX6959 Only) digits decimal points are not used, or up to 36 discreteLEDs. The MAX6959 also includes two input ports, one IRQ Output When a Key Input Is Debounced or both of which may be configured as a key-switch (MAX6959 Only) reader, which automatically scans and debounces a 20µA Low-Power Shutdown (Data Retained) matrix of up to eight switches. Key-switch status is Automotive Temperature Range (-40°C to +125°C) obtained by polling internal status registers or by con- Compact 16-Pin PDIP and QSOP Packages figuring the MAX6959 interrupt output. Other on-chip features include a hexadecimal font for Ordering Information seven-segment displays, multiplex scan circuitry,anode and cathode drivers, and static RAM that stores TEMP SLAVE PIN- PKG PART each digit. The peak segment current for the display RANGE ADDRESS PACKAGE CODE digits is set internally to 23mA. Display intensity is -40°C to adjusted using a 64-step internal digital brightness con- MAX6958AAEE 0111000 16 QS OP E 16- 1

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MAX6958-MAX6959.pdf Datasheet