Datasheet HD74LV244A Datasheet (HIT)

HD74LV244A

Octal Buffers / Drivers with 3-state Outputs

ADE-205-246 (Z)

1st Edition

March 1999

Description

The HD74LV244A has eight line drivers with three-state outputs in a 20-pin package. Four non-inverters
are included in one circuit. Each circuit can be independently controlled by the enable signal 1OE or 2OE,
which enables outputs when receiving a low-level signal. Low-voltage operation is suitable for battery­powered products (e.g., notebook computers), and the low-power consumption extends the battery life.

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)

• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)

• Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C)

• Output current ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V)

Function Table

Inputs
OE A Output Y

LHH
LLL
HXZ

Note: H: High level

L: Low level
X: Immaterial
Z: High impedance

HD74LV244A

Pin Arrangement

1OE

V

1

20

CC

1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1

GND

10

2
3
4
5

6
7
8
9

(Top view)

19
18
17
16
15
14
13
12
11

2OE
1Y1

2A4
1Y2
2A3

1Y3
2A2
1Y4

2A1

2

HD74LV244A

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 be 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 even if the input and output clamp-current
ratings are observed.

2. This value is limited to 5.5 V maximum.

3. The data above are measured by ∆V
mm) with 10% of wiring density.

–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 or Output: Z
–20 mA VI < 0

±50 mA VO < 0 or VO > V
±35 mA VO = 0 to V

CC

±70 mA

835 mW SOP

757 TSSOP

method mounting on glass epoxy board (40 × 40 × 1.6

BE

CC

3

HD74LV244A

Recommended Operating Conditions

Item Symbol Min 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

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
0VCCV H or L
0 5.5 High impedance state
— –50 µAV
—–2 mAV
—–8 V

= 2.0 V

CC

= 2.3 to 2.7 V

CC

= 3.0 to 3.6 V

CC

— –16 VCC = 4.5 to 5.5 V
—50 µAV

= 2.0 V

CC

— 2 mA VCC = 2.3 to 2.7 V
—8 V
—16 V

= 3.0 to 3.6 V

CC

= 4.5 to 5.5 V

CC

0 100 VCC = 3.0 to 3.6 V
020 V

= 4.5 to 5.5 V

CC

4

Logic Diagram

HD74LV244A

1OE

1A1

1A2

1A3

1A4

1

2

4

6

8

18

16

14

12

1Y1

1Y2

1Y3

1Y4

2OE

2A1

2A2

2A3

2A4

19

11

13

15

17

9

2Y1

7

2Y2

5

2Y3

3

2Y4

5

HD74LV244A

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
Off-state

IH

V

IL

OH

V

OL

IN

I

OZ

output current
Quiescent

I

CC

supply current
Output leakage

I

OFF

current
Input

C

IN

capacitance

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 IOH = –50 µA

Max

2.3 2.0 — — IOH = –2 mA

3.0 2.48 — — IOH = –8 mA

4.5 3.8 — — IOH = –16 mA
Min to

— — 0.1 IOL = 50 µA

Max

2.3 — — 0.4 IOL = 2 mA

3.0 — — 0.44 IOL = 8 mA

4.5 — — 0.55 IOL = 16 mA
0 to 5.5 — — ±1 µAVIN = 5.5 V or GND

5.5 — — ±5 µAVO = VCC or GND

5.5 — — 20 µAVIN = VCC or GND, IO = 0

0——5 µAVO = 5.5 V

3.3 — 2.3 — pF VI = VCC or GND

6

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

Enable time t

Disable
time

• VCC = 3.3 ± 0.3 V

Item Symbol Min Typ Max Min Max Unit Test Conditions

Propagation
delay time

Enable time t

t

PLH

t

PHL

— 7.5 12.5 1.0 15.0 ns CL = 15 pF A Y

— 9.5 15.3 1.0 18.0 CL = 50 pF

ZH

t

ZL

— 8.9 14.6 1.0 17.0 ns CL = 15 pF OE Y

— 10.8 17.8 1.0 21.0 CL = 50 pF

t

HZ

t

LZ

— 9.1 14.1 1.0 16.0 ns CL = 15 pF OE Y

— 13.4 19.2 1.0 21.0 CL = 50 pF

Ta = 25°C Ta = –40 to 85°C

t

PLH

t

PHL

— 5.4 8.4 1.0 10.0 ns CL = 15 pF A Y

— 6.8 11.9 1.0 13.5 CL = 50 pF

ZH

t

ZL

— 6.3 10.6 1.0 12.5 ns CL = 15 pF OE Y

HD74LV244A

FROM
(Input)TO(Output)

FROM
(Input)TO(Output)

Disable
time

— 7.8 14.1 1.0 16.0 CL = 50 pF

t

HZ

t

LZ

— 7.6 11.7 1.0 13.0 ns CL = 15 pF OE Y

— 11.0 16.0 1.0 18.0 CL = 50 pF

7

HD74LV244A

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

Enable time t

Disable
time

t

PLH

t

PHL

— 3.9 5.5 1.0 6.5 ns CL = 15 pF A Y

— 4.9 7.5 1.0 8.5 CL = 50 pF

ZH

t

ZL

— 4.5 7.3 1.0 8.5 ns CL = 15 pF OE Y

— 5.6 9.3 1.0 10.5 CL = 50 pF

t

HZ

t

LZ

— 6.5 12.2 1.0 13.5 ns CL = 15 pF OE Y

— 8.8 14.2 1.0 15.5 CL = 50 pF

FROM
(Input)TO(Output)

8

HD74LV244A

Output-skew characteristics

• CL = 50 pF

Ta = 25°C Ta = –40 to 85°C

Item Symbol V

Output skew t

sk (O)

Note: Skew between any outputs of the same package switching in the same direction. This parameter is

warranted but not production tested.

Operating Characteristics

• CL = 50 pF

Item Symbol V

Power dissipation
capacitance

C

PD

(V) Min Max Min Max Unit

CC

2.3 to 2.7 — 2.0 — 2.0 ns

3.0 to 3.6 — 1.5 — 1.5

4.5 to 5.5 — 1.0 — 1.0

Ta = 25°C

(V) Min Typ Max Unit Test Conditions

CC

3.3 — 14.0 — pF f = 10 MHz

5.0 — 16.0 —

Noise Characteristics

• CL = 50 pF

Item Symbol V

Quiet output,
maximum
dynamic V

Quiet output,
minimum
dynamic V

Quiet output,
minimum
dynamic V

High-level
dynamic
input voltage

Low-level
dynamic
inout voltage

V

OL (P)

OL

V

OL (V)

OL

V

OH (V)

OH

V

IH (D)

V

IL (D)

Ta = 25°C

(V) Min Typ Max Unit Test Conditions

CC

3.3 — 0.6 0.8 V

3.3 — –0.5 –0.8

3.3 — 2.9 —

3.3 2.31 — — V

3.3 — — 0.99

9

HD74LV244A

Test Circuit

Pulse generator

Z

out

= 50 Ω

V

CC

V

CC

1OE, 2OE

Output

Input

1Y1 to 2Y4

C =

1A1 to 2A4

L

15 or 50 pF

See Function Table

Note: C includes the probe and jig capacitance.

L

1 kΩ

TEST

t /t

PLH PHL

t /t

ZH HZ

t /t

ZL LZ

S1

OPEN
GND

V

CC

S1

OPEN

GND

V

CC

10

HD74LV244A

• Waveform – 1

Input A

Output Y

• Waveform – 2

Input OE

Waveform – A

Waveform – B

CC

t

CC

r

t

f

10%

t

r

90%

50% V

t

CC

PLH

90%

50% V

50% V

t

f

90% 90%

50% V

CC

50% V

10% 10 %

t

ZL

50% V

CC

t

ZH

50% V

CC

t

LZ

t

HZ

10 %

CC

t

PHL

50% V

CC

V + 0.3 V

OL

V – 0.3 V

OH

V

0 V

V

V

V

0 V

V

V

V

0 V

CC

OH

OL

CC

CC

OL

OH

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

Notes:

rf

2. Waveform-A is for an output with internal conditions such that the output is low except when disabled
by the output control.

3. Waveform-B is for an output with internal conditions such that the output is high except when disabled
by the output control.

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

11

HD74LV244A

Package Dimensions

20

Unit: mm

12.6

13 Max

11

5.5

1

0.80 Max

1.27

*0.42 ± 0.08

± 0.06

0.40

*Dimension including the plating thickness

Base material dimension

10

0.12

0.10 ± 0.10

0.15

M

2.20 Max

7.80

0.20 ± 0.04

*0.22 ± 0.05

0.70 ± 0.20

Hitachi Code
JEDEC
EIAJ
Weight

(reference value)

+ 0.20
– 0.30

1.15

0° – 8°

FP-20DA
—
Conforms

0.31 g

12

20

HD74LV244A

Unit: mm

12.8

13.2 Max
11

7.50

1

0.935 Max

1.27

*0.42 ± 0.08

0.40 ± 0.06

*Dimension including the plating thickness

Base material dimension

10

0.12

0.20 ± 0.10

0.15

2.65 Max

M

10.40

0.25 ± 0.04

*0.27 ± 0.05

0.70

Hitachi Code
JEDEC
EIAJ
Weight

+ 0.25
– 0.40

1.45

+ 0.57
– 0.30

(reference value)

0° – 8°

FP-20DB
Conforms
—

0.52 g

13

HD74LV244A

*0.22

0.20 ± 0.06

6.50

6.80 Max

20 11

4.40

110

0.65

+0.08
–0.07

0.13

M

0.65 Max

Unit: mm

1.0

6.40 ± 0.20

0.10

1.10 Max

*Dimension including the plating thickness

Base material dimension

0.15 ± 0.04

*0.17 ± 0.05

+0.03

–0.04

0.07

0° – 8°

Hitachi Code
JEDEC
EIAJ
Weight

(reference value)

0.50 ± 0.10

TTP-20DA
—
—

0.07 g

14

Cautions

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intellectual property rights, in connection with use of the information contained in this document.

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received the latest product standards or specifications before final design, purchase or use.

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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 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 fail­safes, so that the equipment incorporating 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.

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

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