Serially Interfaced, 8-Digit LED Display Drivers

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3

ELECTRICAL CHARACTERISTICS (continued)

CONDITIONS

µA

-1

1

Input Current DIN, CLK,

LOAD, CS

V

0.4

Output Low Voltage

V

3.5

Logic High Input Voltage

V

0.8

Logic Low Input Voltage

V

V+ - 1

Output High Voltage

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

DIN, CLK, LOAD, CS

V

1

Hysteresis Voltage

ns

25

CS Fall to SCLK Rise Setup Time

(MAX7221 only)

ns

100

CLK Clock Period

ns

50

CLK Pulse Width High

ns

50

CLK Pulse Width Low

ns

25

DIN Setup Time

ns

50

Minimum CS or LOAD Pulse

High

ns

0

DIN Hold Time

ns

25

Output Data Propagation Delay

ns

50

Load-Rising Edge to Next Clock

Rising Edge (MAX7219 only)

ns

0

CLK Rise to CS or LOAD Rise

Hold Time

ms

2.25

Data-to-Segment Delay

LOGIC INPUTS

TIMING CHARACTERISTICS