MAX6957ANI Maxim Integrated Products, MAX6957ANI Datasheet - Page 21

• Manufacturer Part Number: MAX6957ANI
• Description: IC DRIVER LED PORT 20/28 28-DIP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6957ANI

• 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: Through Hole
• Package / Case: 28-DIP (0.300", 7.62mm)
• Number Of Segments: 28
• Low Level Output Current: 18 mA
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Supply Current: 230 uA
• Maximum Power Dissipation: 1143 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Digits Or Characters: -

28-Port LED Display Driver and I/O Expander
4-WIRE CLOCK IN
4-WIRE DATA IN
4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
4-WIRE DATA OUT
CHIP SELECT
IRQ OUT
______________________________________________________________________________________
SW1
SW2
1
47nF
47nF
SW3
2
2
3V
3V
39kΩ
39kΩ
36
34
33
35
31
29
27
25
24
23
22
21
36
34
33
35
31
29
27
25
24
23
22
21
3
2
1
4
3
2
1
4
V+
GND
GND
ISET
DIN
SCLK
CS
DOUT
P31
P30
P29
P28
P27
P26
P25
P24
V+
GND
GND
ISET
DIN
SCLK
CS
DOUT
P31
P30
P29
P28
P27
P26
P25
P24
MAX6957AAX
MAX6957AAX
U1
U2
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P4
P5
P6
P7
P8
P9
P4
P5
P6
P7
P8
P9
32
30
28
26
5
7
9
11
6
8
10
12
13
14
15
16
17
18
19
20
32
30
28
26
5
7
9
11
6
8
10
12
13
14
15
16
17
18
19
20
Typical Operating Circuit
3V
a1
a2
b
c
d1
d2
e
f
g1
g2
h
i
j
k
l
m
dp
ca
a1
a2
b
c
d1
d2
e
f
g1
g2
h
i
j
k
l
m
dp
ca
a1
a2
b
c
d1
d2
e
f
g1
g2
h
i
j
k
l
m
dp
ca
LED1
LED2
LED3
21