74LVT244A Ver la hoja de datos (PDF) - Philips Electronics
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74LVT244A Datasheet PDF : 10 Pages
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Philips Semiconductors
3.3V Octal buffer/line driver (3-State)
Product specification
74LVT244A
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.
SYMBOL
PARAMETER
WAVEFORM
tPLH
Propagation delay
tPHL
nAx to nYx
1
tPZH
Output enable time
tPZL
to High and Low level
2
tPHZ
Output disable time
tPLZ
from High and Low level
2
NOTE:
1. All typical values are at VCC = 3.3V and Tamb = 25°C.
LIMITS
VCC = 3.3V ±0.3V
MIN
TYP1
MAX
1
2.5
4.1
1
2.6
4.1
1
3.2
5.2
1.1
3.1
5.2
1.9
3.3
5.6
1.8
3.3
5.1
VCC = 2.7V
MAX
5.0
5.1
6.3
6.7
6.3
5.6
UNIT
ns
ns
ns
AC WAVEFORMS
VM = 1.5V, VIN = GND to 2.7V
nAx INPUT
VM
tPLH
nYx
VM
OUTPUT
VM
tPHL
VM
3.0V or VCC
whichever
is less
0V
VOH
VOL
SA00016
Waveform 1. Input (nAx) to Output (nYx) Propagation Delays
OE INPUT
1.5V
tPZL
Yn OUTPUT
1.5V
tPZH
Yn OUTPUT
1.5V
1.5V
tPLZ
tPHZ
2.7V
0V
3.0V
VOL + 0.3V
VOL
VOH
VOH – 0.3V
0V
SV00103
Waveform 2. 3-State Output Enable and Disable Times
1998 Feb 19
5
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