Philips Semiconductors

Product specification

74LVC1284

3.3V Parallel printer interface transceiver/buffer

1995 Nov 10

3

PIN DESCRIPTION

PIN NUMBER

SYMBOL

FUNCTION

1,2,3,4

A1 - A4

Data inputs/outputs

20,19,18,17

B1 - B4

IEEE 1284 Std.

outputs/inputs

7,8,9

A5 - A7

Data inputs

14,13,12

Y5 - Y7

IEEE 1284 Std. outputs

10

DIR

Direction selection

11

HD

B/Y–side high drive

enable/disable

5,6

GND

Ground (0V)

15,16

Positive supply voltage

FUNCTION TABLE

INPUTS

OUTPUTS

INPUTS/OUTPUTS

DIR

HD

A5-7

Y5-7

A1-4

B1-4

L

L

L

L

A = B

Inputs

L

L

H

Z

A = B

Inputs

L

H

L

L

A = B

Inputs

L

H

H

H

A = B

Inputs

H

L

L

L

Inputs Low

Outputs Low

H

L

H

Z

Inputs High

Outputs Z

H

H

L

L

Inputs

B = A

H

H

H

H

Inputs

B = A

H = High Voltage

L = Low Voltage

Z = High Impedance, Off-State

SYMBOL

PARAMETER

CONDITIONS

RATING

UNIT

ESD Immunity, per Mil Std 883C method 3015

"2

kV

DC supply voltage

–0.5 to +4.6

V

DC input diode current

"20

mA

DC output diode current

"50

mA

–0.5 to +5.5

V

–0.5 to +5.5

V

40ns transient

–2 to +7

V

DC output voltage on A side

V

DC output current

Outputs in High or Low state

"50

mA

Storage temperature range

–60 to +150

°C

"200

mA

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.

specified range.

RECOMMENDED OPERATING CONDITIONS

SYMBOL

PARAMETER

LIMITS

UNIT

SYMBOL

PARAMETER

MIN

MAX

UNIT

DC supply voltage

3.0

3.6

V

Input voltage

0

V

B/Y output voltage

–0.5

5.5

V

A side output voltage

0

V

B/Y side output current High

–14

mA

B/Y side output current Low

14

mA

Operating free-air temperature range

0

+70

°C