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NJU3712

8-BIT SERIAL TO PARALLEL CONVERTER

Japan Radio Corporation  

NJU3712

8-BIT SERIAL TO PARALLEL CONVERTER

 GENERAL DESCRIPTION

The NJU3712 is an 8-bit serial to parallel converter

especially applying to MPU outport expander. It can

operate from 4.5V to 5.5V.

The effective outport assignment of MPU is available

as the connection between NJU3712 and MPU using

only 4 lines.

The serial data synchronizing with 5MHz or more

clock can be input to the serial data input terminal and

the data are output from parallel output buffer through

serial in parallel out shift register and parallel data

latches.

Furthermore, the NJU3712 outputs the serial data

from SO terminal through the shift register. Therefore, it

connects with other SIPO ICs like as NJU3711 in

cascade for expanding the parallel conversion outputs.

The hysteresis input circuit realizes wide noise

margin and the high drive-ability output buffer (25mA)

can drive LED directly.

 PACKAGE OUTLINE

NJU3712D

 FEATURES

 8-Bit Serial In Parallel Out

 Cascade Connection

 Hysteresis Input

0.5V typ

 Operating Voltage

4.5 to 5.5V

 Maximum Operating Frequency 5MHz

 Output Current

25mA

 C-MOS Technology

 Package Outline

DIP16 / DMP16

 BLOCK DIAGRAM

 PIN CONFIGURATION

P3

1

16

P4

2

15

P5

3

14

VSS

4

13

P6

5

12

P7

6

11

P8

7

10

SO

8

9

NJU3712D/M

NJU3712M

VDD

P2

P1

VSS

CLR

STB

CLK

DATA

DATA

P1

P2

CLK

P3

P7

P8

SO

STB

CLR

Controller Circuit

Ver.2017-12-07

-1-

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