NJU3719A

NJU3719A 24-BIT SERIAL TO PARALLEL CONVERTER GENERAL DESCRIPTION The NJU3719A is a 24-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 NJU3719A 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 (25mA) can drive LED directly. PACKAGE OUTLINE NJU3719AV FEATURES 24-Bit Serial In Parallel Out 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 SSOP32 BLOCK DIAGRAM PIN CONFIGURATION P11 P12 P13 P14 P15 P16 P17 VSS P18 P19 P20 P21 P22 NC P23 P24 1 32 2 31 3 30 4 29 5 28 6 27 7 26 8 25 9 24 10 23 11 22 12 21 13 20 14 19 15 18 16 17 NJU3719AV VDD P10 P9 P8 P7 P6 P5 P4 P3 P2 P1 CLR STB NC CLK DATA DATA CLK P1 P2 P3 Shift Register Latch Circuit STB CLR Controller Circuit P23 P24 Ver.2011-09-28 -1- NJU3719A TERMINAL DESCRIPTION No. SYMBOL I/O 1 P11 O 2 P12 O 3 P13 O 4 P14 O 5 P15 O 6 P16 O 7 P17 O 8 VSS 9 P18 O 10 P19 O 11 P20 O 12 P21 O 13 P22 O 14 NC - 15 P23 O 16 P24 O 17 DATA I 18 CLK I ...