74lvt244b NXP Semiconductors, 74lvt244b Datasheet - Page 6

• Manufacturer Part Number: 74lvt244b
• Description: 3.3v Octal Buffer/line Driver 3-state
• Manufacturer: NXP Semiconductors

1. All typical values are at V
Philips Semiconductors
NOTE:
AC WAVEFORMS
V
TEST CIRCUIT AND WAVEFORMS
1998 Nov 12
nYx
OUTPUT
M
nAx INPUT
Waveform 1. Input (nAx) to Output (nYx) Propagation Delays
3.3V Octal buffer/line driver (3-State)
GENERATOR
= 1.5V, V
SWITCH POSITION
DEFINITIONS
R
C
R
t
PULSE
t
t
PLH
T
PHZ
L
L
PLZ
TEST
= Load resistor; see AC CHARACTERISTICS for value.
= Load capacitance includes jig and probe capacitance;
= Termination resistance should be equal to Z
/t
/t
/t
PHL
PZL
PZH
see AC CHARACTERISTICS for value.
pulse generators.
IN
Test Circuit for 3-State Outputs
= GND to 2.7V
V
M
SWITCH
t
PLH
V
Open
GND
IN
6V
R
T
V
M
CC
= 3.3V and T
D.U.T.
V
CC
V
M
V
t
PHL
OUT
amb
C
L
= 25 C.
V
M
OUT
3.0V or V
R
R
whichever
is less
0V
V
V
L
L
OH
OL
of
SA00016
6.0V
CC
GND
Open
6
FAMILY
74LVT
NEGATIVE
PULSE
POSITIVE
PULSE
Yn OUTPUT
Yn OUTPUT
OE INPUT
Waveform 2. 3-State Output Enable and Disable Times
90%
10%
Amplitude
2.7V
1.5V
V
t
t
V
PZL
PZH
M
10%
90%
M
Input Pulse Definition
INPUT PULSE REQUIREMENTS
t
t
THL
TLH
Rep. Rate
V
v10MHz
(t
(t
1.5V
1.5V
F
R
M
)
)
= 1.5V
t
t
W
W
10%
90%
500ns v2.5ns v2.5ns
t
W
V
V
1.5V
M
M
t
t
PLZ
PHZ
74LVT244B
Product specification
90%
10%
t
R
t
t
TLH
THL
SV00092
(t
(t
0V
0V
AMP (V)
AMP (V)
3.0V
V
V
V
0V
R
F
V
)
t
OL
OL
OH
OH
)
F
SV00103
0V
2.7V
+ 0.3V
– 0.3V