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www.fairchildsemi.com

www.fairchildsemi.com

FM3570 Rev. A

SCL

1

20

SDA

2

19

ASEL

OVRD

3

18

WP

I0

4

17

Non_Mux_Out

I1

5

16

MUXSEL

I2

6

15

Y0

I3

7

14

Y1

I4

8

13

Y2

Level

9

12

Y3

GND

10

11

Y4

Ordering Code

FM

3570

XXXX

X

Blank

Tube

X

Tape & Reel

M20

20-Pin SO Package Option

MT20

20-Pin TSSOP Package Option

Order Number

Package Number

Package Description

FM3570MT20

MTC20

20-Pin TSSOP

FM3570MT20X

MTC20

20-Pin TSSOP T & R

FM3570M20

M20B

20 Pin SO

FM3570M20X

M20B

20 Pin SO T & R

For all other combinations, check with Fairchild Marketing/Sales

Pin Connection Diagram

20-Pin Packages

FM3570

Pin Description

Pin Name

Description

I [0:4]

Data Inputs w/Pullups (10K-40K)

Y [0:4]

Open-Drain Data Outputs

SCL

Serial Port Clock Input (120K pullup)

OVRD

Override Input. Sets all outputs to 0

WP

Write Protect Input

Non_mux_out

Non-Multiplexed Output

MUXSEL

Multiplexer Select Input

EPV

I Port Pull-up Resistor Voltage

ASEL

Address Select Input

SDA

Serial Port Data I/O (120K pull-up)