MAX6950 Maxim, MAX6950 Datasheet - Page 3

• Manufacturer Part Number: MAX6950
• Description: Serially Interfaced / +2.7V to +5.5V / 5- and 8-Digit LED Display Drivers
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS
(Typical operating circuit, V+ = +3.0V to +5.5V, T
Note 1: All parameters tested at T
Note 2: Guaranteed by design.
TIMING CHARACTERISTICS (V+ = +2.7V) (Note 2)
CLK Clock Period
CLK Pulse Width High
CLK Pulse Width Low
C S Fall to CLK Ri se Setup Time
CLK Ri se to CS Rise Hold Time
DIN Setup Time
DIN Hold Time
CS Pulse High
Slow Segment Blink Period
(Internal Oscillator)
Fast Segment Blink Period
(Internal Oscillator)
Fast or Slow Segment Blink Duty
Cycle (Note 2)
Digit Drive Sink Current
Segment Drive Source Current
Digit Drive Sink Current (Note 2)
Segment Drive Source Current
(Note 2)
Slew Rate Rise Time
LOGIC INPUTS
Input Current DIN, CLK, CS
Logic High Input Voltage DIN,
CLK, CS
Logic Low Input Voltage DIN,
CLK, CS
H yster esi s V ol tag e D IN , C LK, C S
TIMING CHARACTERISTICS (Figure 1)
CLK Clock Period
CLK Pulse Width High
CLK Pulse Width Low
C S Fall to CLK Ri se S etup Ti m e
CLK Ri se to CS Rise Hold Time
DIN Setup Time
DIN Hold Time
CS Pulse High
PARAMETER
_______________________________________________________________________________________
A
Serially Interfaced, +2.7V to +5.5V,
= +25°C. Specifications over temperature are guaranteed by design.
f
f
S LOWBLIN K
SYMBOL
FASTBLIN K
I
5- and 8-Digit LED Display Drivers
I
I
I
IH
t
t
DIGIT
I
DIGIT
I
SEG
t
t
t
t
CSW
CSW
SEG
SEG
V
t
t
CSS
CSH
t
t
t
t
CSS
CSH
t
t
V
t
t
CP
CH
DS
DH
CP
CH
DS
DH
CL
CL
, I
IH
V
IL
I
IL
/ t
A
= T
Eight digits scanned, OSC = RC oscillator,
R
Eight digits scanned, OSC = RC oscillator,
R
T
T
T
T
T
V
A
A
A
A
A
SET
SET
IN
= +25°C, V
= +25°C, V
= +25°C, V+ = 2.7V to 3V, V
= +25°C, V+ = 2.7V to 3V, V
= +25°C
MIN
= 0 or V+
= 56k , C
= 56k , C
to T
MAX
LED
LED
CONDITIONS
, unless otherwise noted.) (Note 1)
SET
SET
= 2.4V
= 2.4V
= 27pF
= 27pF
LED
LED
= 2.2V
= 2.2V
MIN
49.9
38.4
240
-30
-10
2.4
9.5
9.5
50
24
24
12
12
24
80
19
19
19
-2
4
4
3
0
TYP
320
-40
0.5
0.5
50
35
1
MAX
50.1
400
-50
0.4
2
UNITS
mA/µs
mA
mA
mA
mA
µA
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
V
V
V
s
s
3