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MAX6950EEE Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX6950EEE Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 19 page Serially Interfaced, +2.7V to +5.5V, 5- and 8-Digit LED Display Drivers _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (Typical operating circuit, V+ = +3.0V to +5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Slow Segment Blink Period (Internal Oscillator) fSLOWBLINK Eight digits scanned, OSC = RC oscillator, RSET = 56k Ω, CSET = 27pF 1s Fast Segment Blink Period (Internal Oscillator) fFASTBLINK Eight digits scanned, OSC = RC oscillator, RSET = 56k Ω, CSET = 27pF 0.5 s Fast or Slow Segment Blink Duty Cycle (Note 2) 49.9 50 50.1 % Digit Drive Sink Current IDIGIT TA = +25°C, VLED = 2.4V 240 320 400 mA Segment Drive Source Current ISEG TA = +25°C, VLED = 2.4V -30 -40 -50 mA Digit Drive Sink Current (Note 2) IDIGIT TA = +25°C, V+ = 2.7V to 3V, VLED = 2.2V 80 mA Segment Drive Source Current (Note 2) ISEG TA = +25°C, V+ = 2.7V to 3V, VLED = 2.2V -10 mA Slew Rate Rise Time ∆ISEG/∆t TA = +25°C 35 mA/µs LOGIC INPUTS Input Current DIN, CLK, CS IIH, IIL VIN = 0 or V+ -2 2 µA Logic High Input Voltage DIN, CLK, CS VIH 2.4 V Logic Low Input Voltage DIN, CLK, CS VIL 0.4 V Hysteresis Voltage DIN, CLK, CS ∆VI 0.5 V TIMING CHARACTERISTICS (Figure 1) CLK Clock Period tCP 38.4 ns CLK Pulse Width High tCH 19 ns CLK Pulse Width Low tCL 19 ns CS Fall to CLK Rise Setup TimetCSS 9.5 ns CLK Rise to CS Rise Hold Time tCSH 3ns DIN Setup Time tDS 9.5 ns DIN Hold Time tDH 0ns CS Pulse High tCSW 19 ns TIMING CHARACTERISTICS (V+ = +2.7V) (Note 2) CLK Clock Period tCP 50 ns CLK Pulse Width High tCH 24 ns CLK Pulse Width Low tCL 24 ns CS Fall to CLK Rise Setup Time tCSS 12 ns CLK Rise to CS Rise Hold Time tCSH 4ns DIN Setup Time tDS 12 ns DIN Hold Time tDH 4ns CS Pulse High tCSW 24 ns Note 1: All parameters tested at TA = +25°C. Specifications over temperature are guaranteed by design. Note 2: Guaranteed by design. |
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