NJU3712A

NJU3712A 8-BIT SERIAL TO PARALLEL CONVERTER GENERAL DESCRIPTION The NJU3712A is an 8-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 NJU3712A 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 NJU3712A outputs the serial data from SO terminal through the shift register. Therefore, it connects with other SIPO ICs like as NJU3711A 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. FEATURES 8-Bit Serial In Parallel Out Cascade Connection Hysteresis Input 0.5V typ at 5V Operating Voltage 2.4 to 5.5V Maximum Operating Frequency 5MHz Output Current 25mA at 5V, 5mA at 3V C-MOS Technology Package Outline SSOP16 BLOCK DIAGRAM PACKAGE OUTLINE NJU3712AV PIN CONFIGURATION P3 1 P4 2 P5 3 VSS 4 P6 5 P7 6 P8 7 SO 8 16 15 14 13 12 11 10 9 NJU3712AV VDD P2 P1 VSS CLR STB CLK DATA DATA CLK P1 P2 P3 Shift Register Latch Circuit STB CLR Controller Circuit P7 P8 SO Ver.2012-03-15 -1- NJU3712A TERMINAL DESCRIPTION No. SYMBOL I/O 1 P3 O 2 P4 O 3 P5 O 4 VSS 5 P6 O 6 P7 O 7...