NJU3713A Datasheet | New Japan Radio

.. 12-BIT SERIAL TO PARALLEL CONVERTER GENERAL DESCRIPTION The NJU3713A is a 12-bit serial to parallel converter especially applying to MPU outport expander. It can operate from 2.4V to 5.5V. The effective outport assignment of MPU is available as the connection between NJU3713A 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. The hysteresis input circuit realizes wide noise margin and the high drive-ability output buffer (25m A) can drive LED directly. PACKAGE OUTLINE NJU3713AV Features 12-Bit Serial In Parallel Out Hysteresis Input 0.5V typ at 5V Operating Voltage 2.4 to 5.5V Maximum Operating Frequency 5MHz and more Output Current 25m A at 5V, 5m A at 3V C-MOS Technology Package Outline SSOP20 PIN CONFIGURATION P5 P6 P7 P8 VSS NC P9 P10 P11 P12 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDD P4 P3 P2 P1 NC CLR STB CLK DATA NJU3713AV BLOCK DIAGRAM DATA Shift Register Latch Circuit CLK P1 P2 P3 P11 P12 STB CLR Controller Circuit Ver.2003-11-18 -1- .. TERMINAL DESCRIPTION No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 SYMBOL P5 P6 P7 P8 VSS NC P9 P10 P11 P12 DATA CLK STB CLR NC P1 P2 P3 P4 VDD I/O O O O O O O O O I I I I O O O O FUNCTION Parallel Conversion Data Output Terminals GND Non Connection Parallel Conversion Data Output Terminals Serial Data Input Terminal Clock Signal Input Terminal Strobe Signal Input Terminal Clear Signal Input Terminal Non Connection Parallel Conversion Data Output Terminals Power Supply Terminal (2.4 to 5.5V) -2- Ver.2003-11-18 NJU3713A NJU3555 .. FUNCTIONAL DESCRIPTION (1) Reset When the "L" level is input to the CLR terminal, all latches are reset and all of parallel conversion output are "L" level. Normally, the CLR terminal...