MAX6954ATL(2014) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX6954ATL
(Rev.:2014)

4-Wire Interfaced, 2.7V to 5.5V LED Display Driver with I/O Expander and Key Scan

Maxim Integrated 

MAX6954

4-Wire Interfaced, 2.7V to 5.5V LED Display

Driver with I/O Expander and Key Scan

Absolute Maximum Ratings

(Voltage with respect to GND.)

V+.........................................................................-0.3V to +6V

All Other Pins...........................................-0.3V to (V+ + 0.3V)

Current

O0–O7 Sink Current......................................................935mA

O0–O18 Source Current.................................................55mA

DIN, CLK, CS, OSC, DOUT, BLINK, OSC_OUT, ISET...20mA

P0, P1, P2, P3, P4..........................................................40mA

GND...................................................................................... 1A

Continuous Power Dissipation (TA = +70°C)

36-Pin SSOP (derate at 11.8mW/°C above +70°C).....941mW

40-Pin PDIP (derate at 16.7mW/°C above +70°C)....1333mW

40-Pin TQFN (derate at 37mW/°C above +70°C)......2963mW

Operating Temperature Range

(TMIN to TMAX).............................................. -40°C to +125°C

Junction Temperature.......................................................+150°C

Storage Temperature Range............................. -65°C to +150°C

Lead Temperature (soldering, 10s).................................. +300°C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these

or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect

device reliability.

DC Electrical Characteristics

(Typical Operating Circuits, V+ = 2.7V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

Operating Supply Voltage

V+

2.7

TYP MAX UNITS

5.5

V

Shutdown Supply Current

Operating Supply Current

Master Clock Frequency

Dead Clock Protection Frequency

OSC Internal/External Detection

Threshold

OSC High Time

OSC Low Time

Slow Segment Blink Period

Fast Segment Blink Period

Fast or Slow Segment Blink Duty

Cycle

ISHDN

I+

fOSC

fOSC

Shutdown mode, all

digital inputs at V+

or GND

TA = +25°C

TA = TMIN to TMAX

All segments on, all

digits scanned,

intensity set to full,

internal oscillator,

DOUT open circuit,

no display or

OSC_OUT load

connected

TA = +25°C

TA = TMIN to TMAX

OSC = RC oscillator, RSET = 56kW,

CSET = 22pF, V+ = 3.3V

OSC driven externally

VOSC

tCH

tCL

fSLOWBLINK

OSC = RC oscillator, RSET = 56kW,

CSET = 22pF, V+ = 3.3V

fFASTBLINK

OSC = RC oscillator, RSET = 56kW,

CSET = 22pF, V+ = 3.3V

10

35

µA

40

22

30

mA

35

4

MHz

1

8

95

kHz

1.7

V

50

ns

50

ns

1

s

0.5

s

49.5

50.5 %

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