Philips 74LVT2244DB, 74LVT2244D, 74LVT2244PW Datasheet

INTEGRATED CIRCUITS

74LVT2244

3.3V Octal buffer/line driver with 30Ω
series termination resistors (3-State)

Product specification
Supersedes data of 1996 Aug 28
IC23 Data Handbook

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1998 Feb 19

Philips Semiconductors Product specification

3.3V Octal buffer/line driver with 30Ω
series termination resistors (3-State)

FEA TURES

•Octal bus interface

•3-State buffers

•Output capability: +12mA/-12mA

•TTL input and output switching levels

•Input and output interface capability to systems at 5V supply

•Bus-hold data inputs eliminate the need for external pull-up

resistors to hold unused inputs

•Power-up 3-State

•Live insertion/extraction permitted

•No bus current loading when output is tied to 5V bus

•Latch-up protection exceeds 500mA per JEDEC Std 17

•ESD protection exceeds 2000V per MIL STD 883 Method 3015

and 200V per Machine Model

•Outputs include series resistance of 30Ω, making external

termination resistors unnecessary.

QUICK REFERENCE DATA

SYMBOL PARAMETER

C

t

PLH

t

PHL

C

OUT

I

CCZ

IN

Propagation delay
nAx to nYx

CL = 50pF;

VCC = 3.3V
Input capacitance VI = 0V or 3.0V 4 pF
Output capacitance Outputs disabled; VO = 0V or 3.0V 7 pF
Total supply current Outputs disabled; VCC = 3.6V 0.13 mA

74L VT2244

DESCRIPTION

The LVT2244 is a high-performance BiCMOS product designed for
V

operation at 3.3V .

CC

This device is an octal buffer that is ideal for driving bus lines. The
device features two Output Enables (OE
four of the 3-State outputs.

The 74LVT2244 is designed with 30Ω series resistance in both the
High and Low states of the output. This design reduces the line
noise in applications such as memory address drivers, clock drivers
and bus receivers/transmitters.

CONDITIONS

T

= 25°C; GND = 0V

amb

1, OE2), each controlling

TYPICAL UNIT

2.9

2.9

ns

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER

20-Pin Plastic SOL –40°C to +85°C 74LVT2244 D 74LVT2244 D SOT163-1
20-Pin Plastic SSOP Type II –40°C to +85°C 74LVT2244 DB 74LVT2244 DB SOT339-1
20-Pin Plastic TSSOP Type I –40°C to +85°C 74LVT2244 PW 7LVT2244PW DH SOT360-1

PIN CONFIGURATION

1

1OE

2

1A0

3

2Y3

4

1A1

5

2Y2

6

1A2

7

2Y1

8

1A3

9

2Y0 1Y3

10 11

GND

20

V

CC

2OE

19

1Y0

18

2A3

17

1Y1

16

2A2

15

1Y2

14

2A1

13
12

2A0

SV00010

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

2, 4, 6, 8 1A0 – 1A3 Data inputs

11. 13, 15, 17 2A0 – 2A3 Data inputs
18, 16, 14, 12 1Y0 – 1Y3 Data outputs

9, 7, 5, 3 2Y0 – 2Y3 Data outputs

1, 19 1OE, 2OE Output enables

10 GND Ground (0V)
20 V

CC

Positive supply voltage

1998 Feb 19 853-1867 18985

2

Philips Semiconductors Product specification

I

DC out ut current

mA

3.3V Octal buffer/line driver with 30Ω
series termination resistors (3-State)

LOGIC SYMBOL

1A0

2

1A1

4

1A2

6

1A3

8

1OE

1

2A0

11

2A1

13

2A2

15

2A3

17

2OE

19

1Y0

1Y1

1Y2

1Y3

2Y0

2Y1

2Y2

2Y3

18

16

14

12

9

7

5

3

SV00011

LOGIC SYMBOL (IEEE/IEC)

1

EN

2
4
6
8

19

EN

11 9
13 7
15 5
17 3

74LVT2244

18
16
14
12

SV00012

FUNCTION TABLE

SCHEMATIC OF EACH OUTPUT

INPUTS OUTPUTS

V

nOE1 nAx nYx

V

CC

CC

L L L
L H H

H X Z

H =High voltage level
L =Low voltage level
X = Don’t care

22Ω

OUTPUT

20Ω

Z =High impedance “off” state

SW00202

ABSOLUTE MAXIMUM RA TINGS

SYMBOL

V

CC

V

I

V

OUT

OUT

I

IK

I

OK

T

stg

DC supply voltage –0.5 to +4.6 V
DC input voltage
DC output voltage

p

DC input diode current VI < 0 –50 mA
DC output diode current VO < 0 –50 mA
Storage temperature range –65 to 150 °C

PARAMETER CONDITIONS RATING UNIT

3

3

1, 2

–0.5 to +7.0 V

Output in Off or High state –0.5 to +7.0 V

Output in Low state 128

Output in High state –64

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .

2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.

3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

1998 Feb 19

3