MAX6957AAI+ Maxim Integrated Products, MAX6957AAI+ Datasheet - Page 8

• Manufacturer Part Number: MAX6957AAI+
• Description: IC DRIVER LED PORT 20/28 28-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6957AAI+

• Display Type: LED
• Configuration: 7, 16, 20 Segment
• Interface: 4-Wire Serial
• Current - Supply: 180µA
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Number Of Digits: 7
• Number Of Segments: 7, 14, 16
• Low Level Output Current: 18000 uA
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Supply Current: 270 uA
• Maximum Power Dissipation: 727 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port LED Display Driver and I/O Expander
8
Figure 2. Two MAX6957s Controlling Seven 7-Segment Displays
Figure 3. 4-Wire Interface Timing
VIRTUAL SEGMENTS
VIRTUAL SEGMENTS
DOUT
SCLK
P0
P0
_______________________________________________________________________________________
DIN
CS
P1
P1
P2
P2
P3
P3
t
CSH
7-SEGMENT DIGIT 1
P4
P4
P5
P5
t
DV
P6
P6
t
CSS
t
DS
P7
P7
t
DH
7-SEGMENT DIGIT 5
P8
P8
P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31
P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31
t
CL
7-SEGMENT DIGIT 2
t
CH
7-SEGMENT DIGIT 6
7-SEGMENT DIGIT 3
7-SEGMENT DIGIT 7
t
DO
7-SEGMENT DIGIT 4
t
CSH
V+
V+