74LVC1284 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
74LVC1284 Datasheet PDF : 10 Pages
| |||
Philips Semiconductors
3.3V Parallel printer interface transceiver/buffer
Product specification
74LVC1284
PIN DESCRIPTION
PIN NUMBER
SYMBOL
1,2,3,4
A1 - A4
20,19,18,17
B1 - B4
7,8,9
14,13,12
10
A5 - A7
Y5 - Y7
DIR
11
HD
5,6
15,16
GND
VCC
FUNCTION
Data inputs/outputs
IEEE 1284 Std.
outputs/inputs
Data inputs
IEEE 1284 Std. outputs
Direction selection
B/Y–side high drive
enable/disable
Ground (0V)
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
H = High Voltage
L = Low Voltage
Z = High Impedance, Off-State
Inputs
B=A
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
ESD Immunity, per Mil Std 883C method 3015
"2
kV
VCC
DC supply voltage
–0.5 to +4.6
V
IIK
DC input diode current
VI < 0
"20
mA
IOK
DC output diode current
VIN
DC input voltage3
VO < 0
"50
mA
–0.5 to +5.5
V
VOUT B/YDC DC output voltage on B/Y side3
VOUT B/Y (tr) Transient output voltage on B/Y side4
40ns transient
–0.5 to +5.5
V
–2 to +7
V
VOUT A side DC output voltage on A side
–0.5 to VCC +0.5
V
IO
DC output current
Outputs in High or Low state
"50
mA
Tstg
Storage temperature range
–60 to +150
°C
ICC/IGND Continuous current through VCC or GND
"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.
4. VOUT B/Y (tr) guarantees only that this part will not be damaged by reflections in application so long as the voltage levels remain in the
specified range.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
VCC
VI
VOUT
VOUT
IOH
IOL
Tamb
DC supply voltage
Input voltage
B/Y output voltage
A side output voltage
B/Y side output current High
B/Y side output current Low
Operating free-air temperature range
LIMITS
MIN
MAX
3.0
3.6
0
VCC
–0.5
5.5
0
VCC
–14
14
0
+70
UNIT
V
V
V
V
mA
mA
°C
1995 Nov 10
3
Share Link: 