NJU3714AV-TE1 Nisshinbo

NJU3714A 12-BIT SERIAL TO PARALLEL CONVERTER GENERAL DESCRIPTION PACKAGE OUTLINE The NJU3714A 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 NJU3714A and MPU using only 4 lines. NJU3714AV 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 NJU3714A 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. PIN CONFIGURATION FEATURES 12-Bit Serial In Parallel Out V 1 20 DD P5 Cascade Connection P6 19 P4 2 Hysteresis Input 0.5V typ at 5V 18 P3 P7 3 P8 4 17 P2 Operating Voltage 2.4 to 5.5V V 5 16 P1 SS Maximum Operating Frequency 5MHz P9 6 15 V SS Output Current 25mA at 5V, 5mA at 3V P10 7 14 CLR 13 STB P11 8 C-MOS Technology 12 CLK P12 9 Package Outline SSOP20 10 11 DATA SO NJU3714AV BLOCK DIAGRAM P1 DATA P2 CLK P3 P11 P12 SO STB Controller Circuit CLR Ver.2012-03-15 -1- Shift Register Latch Circuit NJU3714A TERMINAL DESCRIPTION No. SYMBOL I/O FUNCTION 1 P5 O 2 P6 O Parallel Conversion Data Output Terminals 3 P7 O 4 P8 O 5 V - GND SS 6 P9 O 7 P10 O Parallel Conversion Data Output Terminals 8 P11 O 9 P12 O 10 SO O Serial Data Output Terminal 11 DATA I Serial Data Input Terminal 12 CLK I Clock Signal Input Terminal STB 13 I Strobe Signal Input Terminal 14 CLR I Clear Signal Input Terminal 15 V - GND SS 16 P1 O 17 P2 O Parallel Conversion Data Output Terminals 18 P3 O 19 P4 O 20 V - Power Supply Terminal (2.4 to 5.5V) DD Ver.2012-03-15 - 2 -