Datasheet M54995P, M54995FP Datasheet (Mitsubishi)

MITSUBISHI <CONTROL / DRIVER IC>

)

M54995P/FP

Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER

DESCRIPTION

The M54995 is a semiconductor integrated circuit consisting of 8 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 8 bipolar drivers at the parallel outputs.

FEATURES

● Serial input and serial or parallel output

● Serial output enables cascade connection

● Built-in latch for each stage

● Enable input provides output control

● Low supply current (standby current ICC≤10µA)

● Serial I/O level is compatible with typical CMOS devices

● Driver features: High withstand voltage (BVCEO≥30V)

● Wide operating temperature range Ta=-20 – +75°C

APPLICATION

Dot drivers for thermal print heads. Serial/parallel conversion. Drivers for relays and solenoids.

FUNCTION

The M54995 consists of 8 stages of D-type flip flops connected to 8 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 M54995 to expand the number of parallel outputs. S-OUT is connected to S-IN

PIN CONFIGURATION(TOP VIEW

1

→

S-IN

L-GND

V

S-OUT

LATCH

EN

P-GND

T

2

→

3 4

CC

← → →

Clock

Serial input

Logic GND

Power supply

Serial output

Latch input

Enable input

Driver GND

Outline 16P4(P)

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 already present is shifted sequentially to outputs O2 through O8. The parallel outputs are inverted. When the latch input is held low, the latch retains the stored data. When the EN input is high, outputs O1 through O8 all turn off. As the internal logic is unstable when the power is turned on, the EN input should be kept high (setting outputs O1 through O8 off) until input data is set and the internal logic is initialized. L-GND is the GND of CMOS logic circuit and P-GND is the GND of output driver circuits O1 through O8 which employ bipolar transistors capable of large drive currents.

16

→

15

M54995P/FP

→

14

→

13

→

125

→

116

→

107

→

98

→

16P2N-A(FP)

O1 O2 O3 O4 O5 O6 O7 O8

Parallel outputs

BLOCK DIAGRAM

Power supply

V

LATCHLatch input

S-INSerial input

Parallel outputs

O1

O2

O3

O4

O5

O6

O7

O8

16

15 14 13 12 11 10 9

CC

4

ENEnable input

7

Q

L D

6

QTD

2 S-OUT

TClock

1

3

L-GND Logic GND

QTD

8

P-GND Driver GND

5

Serial output

TIMING CHART

MITSUBISHI <CONTROL / DRIVER IC>

M54995P/FP

Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER

S-INSerial input

TClock

LATCHLatch input

ENEnable input

O1

O2

O3

Parallel outputs

O4

O5

O6

O7

O8

S-OUTSerial output

*

The state of the shaded part is unstable.

INPUT/OUTPUT CIRCUIT DIAGRAM

1 Inputs with pullup resistor

(EN, LATCH)

RIN

VCC

2 Inputs with pulldown resistor

(T, S-IN)

RIN

VCC

3 Serial output

(S-OUT)

VCC

L-GND

4 Parallel outputs

(O1 – O8)

L-GND

VCC

P-GND L-GND

MITSUBISHI <CONTROL / DRIVER IC>

Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER

ABSOLUTE MAXIMUM RATINGS (Ta=-20 to 75°C, unless otherwise noted)

Symbol Ratings UnitParameter Conditions

M54995P/FP

VCC VI

VO IO Pd Topr

Tstg

Supply voltage Input voltage

Output voltage Output current Power dissipation Operating temperature

Storage temperature

S-OUT O1 – O8 : OFF

O1 – O8 : ON T

a=25°C

M54995P M54995FP

RECOMMENDED OPERATING DONDITION

Symbol

VCC V

O

IO

Supply voltage Output apply voltage Output current (per circuit)

O1 – O8 : OFF O1 – O8 : ON

Conditions

ELECTRICAL CHARACTERISTICS (Ta=25°C, VCC=5V, unless otherwise noted)

Symbol

VIH VIL IIH IIL RIN VOH VOL IOH IOL VOL1 VOL2 IOLK ICC1

CC2

High-level input voltage Low-level input voltage High-level input current Low-level input current Input resistance High-level output voltage Low-level output voltage High-level output current Low-level output current

Low-level output voltage Output leak current Supply current

S-IN, T EN, LATCH

S-OUT S-OUT S-OUT S-OUT

O1 – O8 O1 – O8

T

a=20 – 75°C, VCC=4 – 6V

VIH=5V V

IL=0V

|IO|≤1µA VOH=4.5V

VOL=0.4V I

OL=50mA OL=60mA

I V

O=30V

Input: open, All driver outputs: OFF One driver output is ON.

Test conditions

-0.5 – +8

-0.5 – V

CC+0.5

-0.5 – V

CC+0.5

-0.5 – 30 60

1.25

0.8

-20 – 75

-55 – 125

Limits

Min. Typ. Max.

456

30 50

Limits

Min. Typ. Max.

0.7V

CC

0

V

CC

0.3VCC 100

-100

50

4.9

0.1

-100 400

0.5

0.6 50 10

3

V V

V

mA

W

°C °C

UnitParameter

V V

mA

UnitParameter

V V

µA µA

kΩ

V V

µA µA

V V

µA µA

mAI

TIMING REQUIREMENTS (Ta=-20 to 75°C, unless otherwise noted)

Symbol

f(T) tw(T) tw(L) tsu th td(T-L) tr(T) tf(T)

Parameter

Clock frequency Clock pulse width Latch pulse width Data setup time Data hold time Clock-latch time Clock pulse rise time Clock pulse fall time

Input duty cycle: 40 – 60%

Test conditions

Limits

Min. Typ. Max.

2 MHz 200 200 100 100 400

500 500

Unit

ns ns ns ns ns ns ns

TIMING CHART

MITSUBISHI <CONTROL / DRIVER IC>

M54995P/FP

Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER

Serial data input

Clock

Latch input

S-IN

LATCH

2.5V

tsu

T

t

h

2.5V 2.5V

t

w

(T) tr(T)

t

d

(T-L)

2.5V

2.5V 2.5V

t

w

(L)

10%

SWITCHING CHARACTERISTICS (Ta=25°C, VCC=5V, unless otherwise noted)

Symbol

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

Parameter

Low-to-high-level output propagation time From input T to output S-OUT High-to-low-level output propagation time

From input T to output S-OUT Low-to-high-level output propagation time From input T to output O

N

High-to-low-level output propagation time From input T to output ON

Low-to-high-level output propagation time From input EN to output ON High-to-low-level output propagation time From input EN to output ON

Test conditions

VIH=5V VIL=0V RL(S-OUT)=∞ RL(ON)=100Ω

(N=1–8)

CL=15pF

90%

t

f

Limits

Min. Typ. Max.

10%

(T)

0.3

10

5

10

5 µs

Unit

µs

TEST CIRCUIT

PG

TIMING CHART

Clock

Serial output

Enable input

Output

Input

S-OUT

EN

ON

50Ω

T

VCC

M54995P/FP

2.5V

tPLH

RL

Output

CL

2.5V

t

PLH

2.5V

The input waveform: t The capacitance C input capacitance.

2.5V

tPHL

2.5V

r ≤ 20ns, tf ≤ 20ns

L includes the wiring stray capacitance and probe

2.5V

tPLHtPHL

2.5V

t

PHL

2.5V

MITSUBISHI <CONTROL / DRIVER IC>

Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER

TYPICAL CHARACTERISTICS (Ta=25°C, VCC=5V, unless otherwise noted)

M54995P/FP

Power dissipation Pd (W)

1.5

1.0

0.5

100

Thermal derating

(Absolute maximum rating)

M54995P

M54995FP

0

25 50 75 100

Ambient temperature Ta (°C)

Driver output VOL vs. IOL

Duty cycle vs. output current

(M54995P/FP)

100

75

OL (mA)

50

Ta = 75°C Repetitive frequency >10H

25

Output current I

Each figure in a circle shows the number of output circuits which operate simultaneously. Current value : output current per circuit

0

0 100

20 40 60 80

Duty cycle (%)

VCC vs. ICC

(Only one output is ON.)

7

6

5

CC (mA)

4

Ta = -20°C

Ta = 25°C T

a = 75°C

8

–1

Z

Low-level output current IOL (mA)

50

0

100 200 300 400 500

Low-level output voltage VOL (mV)

3

2

Supply current I

1

0

510

Supply voltage VCC (V)