Datasheet PI74ALVCH16244A, PI74ALVCH16244V Datasheet (PERICOM)

1

PS8087B 07/28/00

Product Description

Pericom Semiconductor’s PI74ALVCH series of logic circuits
are produced using the Company’s advanced 0.5 micron CMOS
technology, achieving industry leading speed.

The PI74ALVCH16244 is an non-inverting 16-bit buffer/driver
designed for low-voltage 2.3V to 3.6V VCC operation.

The buffer/driver is designed specifically to improve both the
performance and density of 3-State memory address drivers, clock
drivers, and bus-oriented receivers and transmitters.

The device can be used as four 4-bit buffers, two 8-bit buffers, or
one 16-bit buffer. It provides inverting outputs and symmetrical
active-low output-enable (OE) inputs.

To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pullup resistor in which
the minimum value is determined by the current-sinking capability
of the driver.

The PI74ALVCH16244 has “Bus Hold” which retains the data
input’s last state whenever the data input goes to high-impedance
preventing “floating” inputs and eliminating the need for pullup/
down resistors.

Product Features

• PI74AL VCH16244 is designed for low-voltage operation

• VCC = 2.3V to 3.6V

• Hysteresis on all inputs

• T ypical V

OLP

(Output Ground Bounce)

< 0.8V at VCC = 3.3V, TA = 25°C

• T ypical V

OHV

(Output VOH Undershoot)

< 2.0V at VCC = 3.3V , TA = 25°C

• Bus Hold retains last active bus state during 3-State,

eliminating the need for external pullup resistors

• Industrial operation at –40°C to +85°C

• Packages available:

– 48-pin 240 mil wide plastic TSSOP (A)
– 48-pin 300 mil wide plastic SSOP (V)

Logic Block Diagram

1OE

1A1 1Y1

1A2 1Y2

1A3 1Y3

1A4 1Y4

3OE

3A1 3Y1

3A2 3Y2

3A3 3Y3

3A4 3Y4

2OE

2A1 2Y1

2A2 2Y2

2A3 2Y3

2A4 2Y4

4OE

4A1 4Y1

4A2 4Y2

4A3 4Y3

4A4 4Y4

43

44

46

47

1

37

38

40

41

48

12

11

9

8

6

5

3

2

32

33

35

36

25

17

16

14

13

26

27

29

30

24

23

22

20

19

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

1

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2

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16-Bit Buffer Driver

with 3-State Outputs

PI74ALVCH16244

PI74ALVCH16244

16-Bit Buffer Driver with 3-S tate Outputs

2

PS8087B 07/28/00

stupnIstuptuO

EOnxAnxYn

LHH
LLL
HX Z

Pin Name Description

nOE 3-State Output Enable Inputs (Active LOW)
nAx Inputs
nYx 3-State Outputs
GND Ground
V

CC

Power

Product Pin Description T ruth T able

(1)

Product Pin Configuration

Notes:

1. H = High Signal Level
L = Low Signal Level
X = Don't Care or Irrelevant
Z = High Impedance

1
2
3
4
5
6
7
8
9

48

10

47

11

46

12

45

13

44

14

43

15

42

16

41

17

40

18

39

19

38

20

37

21

36

22

35

23

34

24

33
32
31
30
29
28
27
26
25

1

OE

1Y1
1

Y

2

GND

GND

GND

GND

V

CC

V

CC

4

OE

1Y3
1

Y

4

2

Y

1

2

Y

2

2

Y

3

2

Y

4

3

Y

1

3

Y

2

3

Y

3

3

Y

4

4

Y

1

4

Y

2

4

Y

3

4

Y

4

2

OE

1A1
1

A

2

GND

GND

GND

GND

V

CC

V

CC

3

OE

1A3
1

A

4

2

A

1

2

A

2

2

A

3

2

A

4

3

A

1

3

A

2

3

A

3

3

A

4

4

A

1

4

A

2

4

A

3

4

A

4

48-Pin

A,V

PI74ALVCH16244

16-Bit Buffer Driver with 3-S tate Outputs

3

PS8087B 07/28/00

Storage Temperature .............................................................. –65°C to +150°C

Ambient Temperature with Power Applied ........................... –40°C to +85°C

Input Voltage Range, V

IN

.........................................................

–0.5V to V

CC

+0.5V

Output Voltage Range, V

OUT

..................................................

–0.5V to V

CC

+0.5V

DC Input Voltage ...................................................................... –0.5V to +5.0V

DC Output Current ............................................................................... 100mA

Power Dissipation ..................................................................................... 1.0W

Note:

Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device.
This is a stress rating only and functional operation of the
device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.

DC Electrical Characteristics (Over the Operating Range, T

A

= –40°C to +85°C, VCC = 3.3V ±10%)

Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)

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HI

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21–=V,Am

CC

=V3.27.1

V

HI

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HO

21–=V,Am

CC

=V7.22.2

V

HI

I,V0.2=

HO

21–=V,Am

CC

=V0.34.2

V

HI

I,V0.2=

HO

42–=V,Am

CC

=V0.30.2

V

LO

tuptuO

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egatloV

I

LO

001= µ V,A

LI

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LI

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LO

6=V,Am

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=V3.24.0

V

LI

I,V7.0=

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21=V,Am

CC

=V3.27.0

V

LI

I,V8.0=

LO

21=V,Am

CC

=V7.24.0

V

LI

I,V8.0=

LO

42=V,Am

CC

=V0.355.0

I

HO

)3(

tuptuO

HGIH

tnerruC

V

CC

V3.2=21–

Am

V

CC

V7.2=21–

V

CC

V0.3=42–

I

LO

)3(

tuptuO

WOL

tnerruC

V

CC

V3.2=21

V

CC

V7.2=21

V

CC

V0.3=42

PI74ALVCH16244

16-Bit Buffer Driver with 3-S tate Outputs

4

PS8087B 07/28/00

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V

CC

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Switching Characteristics over Operating Range

(1)

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax [phone] • http://www.pericom.com

Operating Characteristics, TA = 25ºC

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Notes:

1 . See test circuit and waveforms.
2 . Minimum limits are guaranteed but not tested on Propagation Delays.
3 . Recommended operating condition.

Notes:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at VCC = 3.3V, +25°C ambient and maximum loading.

3. Unused Control Inputs must be held HIGH or LOW to prevent them from floating.

DC Electrical Characteristics-Continued (Over the Operating Range, T

A

= –40°C to +85°C, VCC = 3.3V ±10%)

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V

NI

V,V7.0=

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V3.2=54

V

NI

V,V7.1=

CC

V3.2=54–

V

NI

V,V8.0=

CC

V0.3=57

V

NI

V,V0.2=

CC

V0.3=57–

V

NI

0=otV,V6.3

CC

V6.3=005±

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