MITSUBISHI
M54992P/FP
Bi-CMOS 24-BIT SERIAL-INPUT LATCHED DRIVER
DESCRIPTION
The M54992 is a semiconductor integrated circuit consisting of 24 stages of CMOS shift registers and latches with serial inputs and serial or parallel outputs. It is based on Bi-CMOS process technology, and has 24 bipolar drivers at the parallel outputs.
PIN CONFIGURATION (TOP VIEW)
GND 1 O6 2 O5 3 36 GND 35 O7 Parallel outputs 34 O8 33 NC 32 O9 31 O10 30 O11 29 O12 Parallel outputs O4 4 Parallel outputs O3 5 O2 6 O1 7 Serial input Clock S-IN 8
FEATURES
q Serial input and serial or parallel output q Serial output enables cascade connection q Built-in latch for each stage q Enable input provides output control q Low supply current (standby current ICC≤1mA) q Serial I/O level is compatible with typical CMOS devices q Driver features: High withstand voltage (BVCEO≥30V) Capable of large drive currents (IO(max)=100mA) q Wide operating temperrature range Ta=-10 – +75°C
M54992P
T 9
28 EN 27 VCC 26 O13 25 O14
Enable input
Latch input LATCH 10 O24 11 O23 12 Parallel outputs O22 13 O21 14 NC 15 Parallel outputs O20 16 O19 17
Parallel outputs 24 O15 23 O16 22 NC 21 O17 Parallel outputs 20 O18 19 GND
APPLICATION
Dot drivers of thermal printer heads, serial/parallel conversion. Drivers for relays and solenoids.
FUNCTION
The M54992 consists of 24 stages of D-type flip flops connected to 24 latches. Data is input to serial input S-IN, and clock pulses are input to clock input T. When the clock changes from low to high, the input data enters the first shift register and data already in the shift registers is shifted sequentially. The serial output S-OUT is used to connect multiple M54992 to expand the number of parallel outputs. S-OUT is connected to S-IN of the next stage. For parallel output. When the clock pulse changes from low to high, latch input (LATCH) is high and output enable input (EN) is low the serial input data at S-IN appears at output O1 and the other data ...
M54992FP PDF File
