M54975FP MITSUBISHI, M54975FP Datasheet

M54975FP

Manufacturer Part Number

M54975FP

Description

Bi-CMOS 8-bit serial-input latched driver

Manufacturer

MITSUBISHI

Datasheet

1.M54975FP.pdf (5 pages)

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DESCRIPTION

The M54975 is a semiconductor integrated circuit fabricated using

Bi-CMOS technology. It contains a serial input to serial/parallel

output 8-bit CMOS shift register and CMOS latch as well as bipolar

8-bit parallel-output driver.

FEATURES

APPLICATION

Thermal printer head dot driver, Serial-to parallel conversion, Relay

and Solenoid driver

FUNCTION

The M54975 consists of an 8-bit D-type flip-flop, the output of

which is connected to 8 latches.

When data is applied to the serial data input (S-IN) and a clock

pulse is applied to clock input (T), an “L” to “H” change of the clock

will cause the data input signals to enter the internal shift registers

and the data in the shift registers will be shifted in order.

BLOCK DIAGRAM

Serial input to serial/parallel output

Cascade connections possible through serial output

Latch circuit included for each stage

Enable input for output control

Serial input/output level is compatible with standard CMOS

Driver : Withstand voltage ...................................... BV

Wide operating temperature range ..................... T

Low supply current .................................. I

Power supply

Enable input

Latch input

Serial input

Large drive current ................................ (I

Clock

LATCH

S-IN

L-GND

Logic GND

10 A at standby

O(max)

L D

=-20 – +75 C

CEO

=300mA)

L D

30V

Parallel outputs

L D

Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER

Using a number of M54975 units for bit expansion in series will

entail connecting serial output (S-OUT) to S-IN of the next-stage

M54975.

In parallel output, when the latch input is set to “H” and the output-

control input (enable input EN) is “L”, a clock pulse changing from

“L” to “H” will cause the serial data input signal to appear at output

O1, and the data will be shifted in order at outputs O2 – O8.

The parallel output will yield a signal that is inverted with respect to

the serial data input.

Setting the LATCH input to “L” will prevent data from entering the

latch.

When the EN input is set to “H”, all outputs (O1 – O8) will be set to

OFF. Since the internal logic state of the IC is uncertain at power-

on time, set the EN input to “H” (and outputs O1 – O8 will set to

PIN CONFIGURATION (TOP VIEW)

Serial output

Enable input

Driver GND

Serial input

Logic GND

Latch input

L D

Clock

MITSUBISHI <CONTROL / DRIVER IC>

L D

LATCH

P-GND

L-GND

S-OUT

S-IN

Outline

16P4(P)

16P2N-A(FP)

M54975P/FP

P-GND

S-OUT

Driver GND

Serial output

Parallel outputs

Related parts for M54975FP

M54975FP Summary of contents

Page 1

... MITSUBISHI <CONTROL / DRIVER IC> M54975P/ S- L-GND S-OUT LATCH P-GND Outline ...

... L-GND Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER is the ground for the output driver section (O1 – O8), which is made up of bipolar transistors that are capable of driving large currents L-GND 4 MITSUBISHI <CONTROL / DRIVER IC> M54975P/FP Inputs with pulldown resistor (T, S-IN L-GND Parallel outputs (O1 – O8) 1 ...

Page 3

... Input: open, All driver outputs: OFF One driver output is ON. Test conditions Input duty: 40 – 60% MITSUBISHI <CONTROL / DRIVER IC> M54975P/FP Ratings -0.5 – +8 -0.5 – V +0.5 CC -0.5 – V +0.5 CC -0.5 – +30 350 M54975P 1.25 M54975FP 0.8 -20 – 75 -55 – 125 Limits Min. Typ Limits Min. Typ. 0. 0.3V 50 4.9 — ...

Page 4

... N C =15pF The input waveform The capacitance C Output and probe input capacitance 2.5V 2. PHL PLH 2.5V 2. PLH PHL 2.5V MITSUBISHI <CONTROL / DRIVER IC> M54975P/FP 90% 90% 10% 10 f(T) r(T) 2.5V 2.5V t w(L) Limits Min. Typ. 20ns, t 20ns r f includes the wiring stray capacitance L 2.5V 2. PLH PHL 2 ...

Page 5

... Current value : output current per circuit Duty cycle (%) Duty cycle vs. allowable output current (M54975FP Repetitive frequency 10H Z 60 Each figure in a circle shows the number of output circuits which 40 operate simultaneously. ...

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M54975FP MITSUBISHI, M54975FP Datasheet

M54975FP

Related parts for M54975FP

M54975FP Summary of contents

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