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| 型號(hào)： | MAX6954 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | Dual 4-Bit Decade And Binary Counters 16-CFP -55 to 125 |
| 中文描述： | 4線接口、2.7V至5.5V LED顯示驅(qū)動(dòng)器，帶有輸入/輸出擴(kuò)展器及鍵掃描 |
| 文件頁(yè)數(shù)： | 2/38頁(yè) |
| 文件大?。?/td> | 395K |
| 代理商： | MAX6954 |
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M
4-Wire Interfac ed, 2.7V to 5.5V LED Display
Driver with I/O Expander and K ey S c an
2
_______________________________________________________________________________________
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
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.
Continuous Power Dissipation (T
A
= +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
Operating Temperature Range
(T
MIN
to T
MAX
) ...............................................-40
°
C to +125
°
C
J unction Temperature......................................................+150
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s) .................................+300
°
C
DC ELECTRICAL CHARACTERISTICS
(Typical Operating Circuit, V+ = 2.7V to 5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
V+
CONDITIONS
MIN
2.7
TYP
MAX
5.5
UNITS
V
Operating Supply Voltage
T
A
= +25
°
C
10
35
Shutdown Supply Current
I
SHDN
Shutdown mode, all
digital inputs at V+
or GND
T
A
= T
MIN
to T
MAX
40
μA
T
A
= +25
°
C
22
30
Operating Supply Current
I+
All segments on, all
digits scanned,
intensity set to full,
internal oscillator,
DOUT open circuit,
no display or
OSC_OUT load
connected
T
A
= T
MIN
to T
MAX
35
mA
OSC = RC oscillator, R
SET
= 56k
,
C
SET
= 22pF, V+ = 3.3V
OSC driven externally
4
Master Clock Frequency
f
OSC
1
8
MHz
Dead Clock Protection Frequency
f
OSC
95
kHz
OSC Internal/External Detection
Threshold
V
OSC
1.7
V
OSC High Time
OSC Low Time
t
CH
t
CL
50
50
ns
ns
Slow Segment Blink Period
f
SLOWBLINK
OSC = RC oscillator, R
SET
= 56k
,
C
SET
= 22pF, V+ = 3.3V
1
s
Fast Segment Blink Period
f
FASTBLINK
OSC = RC oscillator, R
SET
= 56k
,
C
SET
= 22pF, V+ = 3.3V
0.5
s
Fast or Slow Segment Blink Duty
Cycle
49.5
50.5
%
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