NJU3754

NJU3754 11-BIT PARALLEL TO SERIAL CONVERTER  GENERAL DESCRIPTION The NJU3754 is an 11-bit parallel to serial converter especially applying to MCU input port expander. It can operate from 2.7V to 5.5V. The NJU3754 requires only 3-port of MCU for data transmission and realizes the effective input port assignment. The status of the input ports is output through a latch circuit, a shift register and a 3-state buffer as the serial data synchronizing with the serial clock. The hysteresis input circuit of the serial clock terminal realizes 5MHz operation. Furthermore, pull-up resistors on chip of P0 to P10 terminals reduce external components for key-scan circuit, etc.  PACKAGE OUTLINE NJU3754V  FEATURES  11-Bit Parallel In Serial Out  3-line Serial Interface Output  Hysteresis Input 0.5V typ at 5V  Operating Voltage 2.7 to 5.5V  C-MOS Technology  Package Outline SSOP16  BLOCK DIAGRAM P0 P1 P2 VSS  PIN CONFIGURATION P0 1 P1 2 P2 3 P3 4 P4 5 P5 6 P6 7 VSS 8 16 15 14 13 12 11 10 9 VDD SO VDD CE CLK SO P10 P9 P8 P7 Latch Circuit Shift Register P9 P10 Control Circuit CE CLK Ver.2014-08-21 -1- NJU3754  TERMINAL DESCRIPTION No. SYMBOL I/O 1 P0 I 2 P1 I 3 P2 I 4 P3 I 5 P4 I 6 P5 I 7 P6 I 8 VSS 9 P7 I 10 P8 I 11 P9 I 12 P10 I 13 SO O 14 CLK I 15 CE I 16 VDD - FUNCTION Parallel Data Input Terminals (with pull-up resistors) Ground Parallel Data Input Terminals (with pull-up resistors) Serial Data Output Terminal Serial Clock Input...