Datasheet HD74LV221A Datasheet (HIT)

HD74LV221A

Dual Monostable Multivibrators

ADE-205-271A (Z)

2nd Edition

June 1999

Description

The HD74LV221A features output pulse-duration control by three methods. In the first method, the A
input is low and the B input goes high. In the second method, the B input is high and the A input goes low.
In the third method, the A input is low, the B input is high, and the clear (CLR) input goes high.
The basic pulse duration is programmed by selecting external resistance and capacitance values. The
external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor
connected between Rext/Cext and VCC.
To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC.
Pulse duration can be reduced by taking CLR low.

Features

• VCC = 2.0 V to 5.5 V operation

• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)

• All outputs VO (Max.) = 5.5 V (@VCC = 0 V)

• Output current ±6 mA (@VCC = 3.0 V to 3.6 V), ±12 mA (@VCC = 4.5 V to 5.5 V)

HD74LV221A

Function Table

Inputs Outputs
CLR A BQ Q

L XXL H
XHXLH
XXLLH
HL↑
H ↓ H
↑ LH

Note: H: High level

L: Low level
X: Immaterial

↑: Low to high transition
↓: High to low transition

: High level pulse

: Low level pulse

Pin Arrangement

1A
1B

1CLR

1Q
2Q

2Cext

2Rext / Cext

GND

1

2

3
4
5

6

7

8 9

(Top view)

16

V

CC

15

1Rext / Cext

14

1Cext

13

1Q

12

2Q

11

2CLR

2B

10

2A

2

HD74LV221A

Absolute Maximum Ratings

Item Symbol Ratings Unit Conditions

Supply voltage range V
Input voltage range*
Output voltage range*

1

1, 2

Input clamp current I
Output clamp current I
Continuous output current I
Continuous current through

V

or GND

CC

Maximum power dissipation
at Ta = 25°C (in still air)*

3

CC

V

I

V

O

IK

OK

O

or I

I

CC

GND

P

T

Storage temperature Tstg –65 to 150 °C
Notes: The absolute maximum ratings are values which must not individually be exceeded, and furthermore,

no two of which may be realized at the same time.

1. The input and output voltage ratings may be exceeded if the input and output clamp-current
ratings are observed.

2. This value is limited to 5.5 V maximum.

3. The maximum package power dissipation was calculated using a junction temperature of 150°C.

–0.5 to 7.0 V
–0.5 to 7.0 V
–0.5 to VCC + 0.5 V Output: H or L
–0.5 to 7.0 VCC: OFF
–20 mA VI < 0

±50 mA VO < 0 or VO > V
±25 mA VO = 0 to V

CC

±50 mA

785 mW SOP

500 TSSOP

CC

3

HD74LV221A

Recommended Operating Conditions

Item Symbol Min Typ Max Unit Conditions

Supply voltage range V
Input voltage range V
Output voltage range V
Output current I

CC

I

O

OH

I

OL

Input transition rise or fall rate ∆t /∆v 0 — 200 ns/V VCC = 2.3 to 2.7 V

External timing registance Rext 5 — — kΩ VCC = 2.0 V

External timing capacitance Cext — unlimited — F
Operating free-air temperature Ta –40 85 °C

Note: Unused or floating inputs must be held high or low.

2.0 — 5.5 V
0 — 5.5 V
0— VCCV
— — –50 µAV

= 2.0 V

CC

— — –2 mA VCC = 2.3 to 2.7 V
— — –6 VCC = 3.0 to 3.6 V
— — –12 VCC = 4.5 to 5.5 V
—— 50 µAV

= 2.0 V

CC

—— 2 mA VCC = 2.3 to 2.7 V
—— 6 VCC = 3.0 to 3.6 V
— — 12 VCC = 4.5 to 5.5 V

0 — 100 VCC = 3.0 to 3.6 V
0 — 20 VCC = 4.5 to 5.5 V

1— — V

≥ 3.0 V

CC

Logic Diagram

4

CLR

A

Q

Q

B

Q

Q

CLR

HD74LV221A

DC Electrical Characteristics

• Ta = –40 to 85°C

Item Symbol VCC (V)* Min Typ Max Unit Test Conditions

Input voltage V

Output voltage V

Input current I
Input current

IH

V

IL

OH

V

OL

IN

I

IN

Rext / Cext
Quiescent

I

CC

supply current

Active state

∆I

CC

supply
current
(per circuit)

Output leakage
current

Input
capacitance

I

OFF

C

IN

Note: For conditions shown as Min or Max, use the appropriate values under recommended operating

conditions.

2.0 1.5 — — V

2.3 to 2.7 VCC × 0.7 — —

3.0 to 3.6 VCC × 0.7 — —

4.5 to 5.5 VCC × 0.7 — —

2.0 — — 0.5

2.3 to 2.7 — — VCC × 0.3

3.0 to 3.6 — — VCC × 0.3

4.5 to 5.5 — — VCC × 0.3
Min to

VCC – 0.1 — — V IOL = –50 µA

Max

2.3 2.0 — — IOL = –2 mA

3.0 2.48 — — IOL = –6 mA

4.5 3.8 — — IOL = –12 mA
Min to

— — 0.1 V IOL = 50 µA

Max

2.3 — — 0.4 IOL = 2 mA

3.0 — — 0.44 IOL = 6 mA

4.5 — — 0.55 IOL = 12 mA
0 to 5.5 — — ±1 µAVIN = 5.5 V or GND

5.5 — — ±2.5 µAVIN = VCC or GND

5.5 — — 20 µAVIN = VCC or GND, IO = 0

2.3 — — 220 µAVIN = VCC or GND
Rext/Cext = 0.5 V

CC

3.0 280

4.5 650

5.5 975

0——5 µAVO = 5.5 V

3.3 — 4.0 — pF VI = VCC or GND

5

HD74LV221A

Switching Characteristics

• VCC = 2.5 ± 0.2 V

Ta = 25°C Ta = –40 to 85°C

Item Symbol Min Typ Max Min Max Unit Test Conditions

Propa­gation
delay time

Pulse
width

Output
pulse
width

t

PLH

t

PHL

t

w

t

wQ

∆t

wQ

— 13.3 31.4 1.0 37.0 ns CL = 15 pF A or B Q or Q

— 15.5 36.0 1.0 42.0 CL = 50 pF
— 10.9 25.0 1.0 29.5 CL = 15 pF CLR Q or Q
— 12.5 32.8 1.0 34.5 CL = 50 pF
— 13.5 33.4 1.0 39.0 CL = 15 pF CLR Q or Q
— 15.9 38.0 1.0 44.0 CL = 50 pF (Trigger)

6.0 — — 6.5 — ns A, B or CLR

— 170 260 — 320 ns CL = 50 pF,

Cext = 28 pF, Rext = 2 kΩ

90 100 110 90 110 µsCL = 50 pF,

Cext = 0.01 µF, Rext = 10 kΩ

0.9 1.0 1.1 0.9 1.1 ms CL = 50 pF,
Cext = 0.1 µF, Rext = 10 kΩ

— ±1— — — % CL = 50 pF

FROM
(Input)

TO
(Output)

6

Switching Characteristics (cont)

• VCC = 3.3 ± 0.3 V

Ta = 25°C Ta = –40 to 85°C

Item Symbol Min Typ Max Min Max Unit Test Conditions

Propa­gation
delay time

Pulse
width

Output
pulse
width

t

PLH

t

PHL

t

w

t

wQ

∆t

wQ

— 9.9 20.6 1.0 24.0 ns CL = 15 pF A or B Q or Q

— 11.6 24.1 1.0 27.5 CL = 50 pF
— 8.3 15.8 1.0 18.5 CL = 15 pF CLR Q or Q
— 9.7 19.3 1.0 22.0 CL = 50 pF
— 9.9 22.4 1.0 26.0 CL = 15 pF CLR Q or Q
— 11.6 25.9 1.0 29.5 CL = 50 pF (Trigger)

5.0 — — 5.0 — ns A, B or CLR

— 150 240 — 300 ns CL = 50 pF,

Cext = 28 pF, Rext = 2 kΩ

90 100 110 90 110 µsCL = 50 pF,

Cext = 0.01 µF, Rext = 10 kΩ

0.9 1.0 1.1 0.9 1.1 ms CL = 50 pF,
Cext = 0.1 µF, Rext = 10 kΩ

— ±1— — — % CL = 50 pF

HD74LV221A

FROM
(Input)

TO
(Output)

7

HD74LV221A

Switching Characteristics (cont)

• VCC = 5.0 ± 0.5 V

Ta = 25°C Ta = –40 to 85°C

Item Symbol Min Typ Max Min Max Unit Test Conditions

Propa­gation
delay time

Pulse
width

Output
pulse
width

t

PLH

t

PHL

t

w

t

wQ

∆t

wQ

— 7.3 12.0 1.0 14.0 ns CL = 15 pF A or B Q or Q

— 8.7 14.0 1.0 16.0 CL = 50 pF
— 6.2 9.4 1.0 11.0 CL = 15 pF CLR Q or Q
— 7.4 11.4 1.0 13.0 CL = 50 pF
— 7.3 12.9 1.0 15.0 CL = 15 pF CLR Q or Q
— 8.6 14.9 1.0 17.0 CL = 50 pF (Trigger)

5.0 — — 5.0 — ns A, B or CLR

— 140 200 — 240 ns CL = 50 pF,

Cext = 28 pF, Rext = 2 kΩ

90 100 110 90 110 µsCL = 50 pF,

Cext = 0.01 µF, Rext = 10 kΩ

0.9 1.0 1.1 0.9 1.1 ms CL = 50 pF,
Cext = 0.1 µF, Rext = 10 kΩ

— ±1 — — — % CL = 50 pF

FROM
(Input)

TO
(Output)

8

Operating Characteristics

• CL = 50 pF

Item Symbol V

Power

C

PD

dissipation
capacitance

(V) Min Typ Max Unit Test Conditions

CC

3.3 — 74.0 — pF f = 10 MHz

5.0 — 86.0 —

Test Circuit

Ta = 25°C

HD74LV221A

V

CC

Input

Cext

–+

V

CC

Refer

Cext Rext/

A

to

Func-

tion

B

Table

CLR

Note : C includes the probe and jig capacitance.

L

Cext

GND

Rext

Cext = 28 pF or 100 pF or 0.01 µF or 0.1 µF
Rext = 1 kΩ or 2 kΩ or 10 kΩ

V

CC

Q

C = 15 pF or 50 pF

L

Q

C = 15 pF or 50 pF

L

Output

Output

9

HD74LV221A

Timing diagram

A

B

CLR

Rext/
Cext

Q

Q

t

w

Caution in use
In order to prevent any malfunctions due to noise, connect a high frequency performance capacitor

between Vcc and GND, and keep the wiring between the external components and Cext, Rext/Cext
pins as short as possible.

Large values of Cext may cause problems when powering down the HD74LV221A because of the amount
of energy stored in the capacitoe. When a system containing diodes at pin 7 or pin15.
Current through the input protection diodes must be limited to 10 mA; therefore, the turn-off time of the Vcc
power supply must not be faster than t = Vcc • Cext/(20 mA). for example, if Vcc 5 V and Cext = 22 µF,
the Vcc supply must turn off no faster than t = (5 V) • (22 µF)/20mA = 5.5 ms. This is usually not a problem
because power supplies are heavily filtered and cannot discharge at this rate.
When a more rapid decrease of Vcc to zero volts occurs, the HD74LV221A may sustain damage. To avoid
this possibility, use an external calmping diode.

t

w

t

w

10

HD74LV221A

• Waveform

Input A

Input B

Input CLR

Output Q

– 1

90%

10%

10%

50%

t

f

10%

t

r

90%

50%

t

r

90%

90%

50% 50%

t (trigger)

PLH

50% V

t (trigger)

PHL

t

f

t

r

50%

10% 10%

t (L)

w

t

PHL

CC

t

50% V

PLH

90%

CC

V

CC

GND

V

CC

GND

V

CC

GND

V

OH

V

OL

Output Q

50% V

CC

50% V

CC

V

OH

V

OL

11

HD74LV221A

• Waveform – 2

Input A

Input B

Output Q

Output Q

Note:

t

f

t

r

50%

10% 10%

t (L)

w

t

r

90%

50%

t

f

10%

t

r

90%

50%

90%

t (H)

w

t

f

90% 90% 90%

50% 50% 50%

10% 10% 10%

t (L)

w

50% V

50% V

1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, t ≤ 3 ns, t ≤ 3 ns

t (H)

w

CC

CC

rf

50% V

t (out)

w

50% V

CC

CC

2. The output are measured one at a time with one transition per measurement.

V

CC

GND

V

CC

GND

V

OH

V

OL

V

OH

V

OL

12

Application Data

10000.0

1000.0

WQ

100.0

10.0

Output pulse width t (µs)

1.0

0.1
10

HD74LV221A

Vcc = 2.5 V

Rext

1 kΩ
10 kΩ
100 kΩ
1 MΩ

2

10

3

10

4

10

5

10

6

10

7

Timing capacitance Cext (pF)

13

HD74LV221A

10000.0

1000.0

WQ

100.0

10.0

Output pulse width t (µs)

1.0

0.1
10

Vcc = 3.3 V

Rext

1 kΩ
10 kΩ
100 kΩ
1 MΩ

2

10

3

10

4

10

5

10

6

10

7

WQ

Output pulse width t (µs)

10000.0

1000.0

100.0

10.0

1.0

0.1
10

Timing capacitance Cext (pF)

Vcc = 5.0 V

Rext

1 kΩ
10 kΩ
100 kΩ
1 MΩ

2

10

3

10

4

10

5

10

6

10

7

14

Timing capacitance Cext (pF)

1.4

1.3

1.2

1.1

1.0

HD74LV221A

Rext = 2 kΩ

Cext

1000 pF
10000 pF
100000 pF
1000000 pF

Coefficient of output pulse width K

0.9

0.8

2.0 2.5 3.0 3.5 4.0 4.5 5.0 6.05.5

1.4

1.3

1.2

1.1

1.0

Supply voltage V (V)

CC

Rext = 10 kΩ

Cext

1000 pF
10000 pF
100000 pF
1000000 pF

Coefficient of output pulse width K

0.9

0.8

2.0 2.5 3.0 3.5 4.0 4.5 5.0 6.05.5

Supply voltage V (V)

CC

15

HD74LV221A

Package Dimensions

16

10.06

10.5 Max
9

5.5

1

0.80 Max

1.27

0.42 ± 0.08

± 0.06

0.40

Dimension including the plating thickness

Base material dimension

8

0.12

2.20 Max

0.10 ± 0.10

0.15

M

7.80

0.22 ± 0.05

0.20 ± 0.04

0.70 ± 0.20

Hitachi Code
JEDEC
EIAJ
Weight

(reference value)

+ 0.20
– 0.30

1.15

0

° – 8°

FP-16DA
—
Conforms

0.24 g

16

16

HD74LV221A

Unit: mm

9.9

10.3 Max
9

1

1.27

0.635 Max

*0.42 ± 0.08

0.40 ± 0.06

*Dimension including the plating thickness

Base material dimension

8

0.25

+ 0.11

– 0.04

0.14

0.15

3.95

1.75 Max

M

6.10

1.08

0.20 ± 0.03

*0.22 ± 0.03

0.60

Hitachi Code
JEDEC
EIAJ
Weight

+ 0.10
– 0.30

0° – 8°

+ 0.67
– 0.20

(reference value)

FP-16DN
Conforms
Conforms

0.15 g

17

HD74LV221A

0.22

0.20 ± 0.06

5.0

5.3 Max

16 9

4.40

18

0.65

+ 0.08
– 0.07

0.13

0.65 Max

1.0

M

6.40 ± 0.20

0.10

1.10 Max

Dimension including the plating thickness

Base material dimension

0.17 ± 0.05

0.15 ± 0.04

+0.03

–0.04

0.07

0° – 8°

Hitachi Code
JEDEC
EIAJ
Weight

(reference value)

0.50 ± 0.10

TTP-16DA
—
—

0.05 g

18

HD74LV221A

Cautions

1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent,
copyright, trademark, or other intellectual property rights for information contained in this document.
Hitachi bears no responsibility for problems that may arise with third party’s rights, including
intellectual property rights, in connection with use of the information contained in this document.

2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.

3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as in aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.

4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-safe
devices, so that the equipment incorporating the Hitachi product does not cause bodily injury, fire or
other consequential damage due to operation of the Hitachi product.

5. This product is not designed to be radiation resistant.

6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Hitachi.

7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.

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Copyright © Hitachi, Ltd., 1998. All rights reserved. Printed in Japan.

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