11-BIT PARALLEL TO SERIAL CONVERTER
NJU3754
11-BIT PARALLEL TO SERIAL CONVERTER
GENERAL DESCRIPTION
The NJU3754 is an 11-bit parallel to serial converte...
Description
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...
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