74lvt646 NXP Semiconductors, 74lvt646 Datasheet - Page 9

• Manufacturer Part Number: 74lvt646
• Description: 3.3v Octal Bus Transceiver/register 3-state
• Manufacturer: NXP Semiconductors

Philips Semiconductors
TEST CIRCUIT AND WAVEFORM
1998 Feb 19
3.3V Octal bus transceiver/register (3-State)
GENERATOR
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.
Test Circuit for 3-State Outputs
SWITCH
V
Open
GND
IN
6V
R
T
D.U.T.
V
CC
V
OUT
C
L
OUT
R
R
L
L
of
6.0V
GND
Open
9
FAMILY
74LVT
NEGATIVE
PULSE
POSITIVE
PULSE
90%
10%
Amplitude
2.7V
V
V
M
10%
90%
M
Input Pulse Definition
INPUT PULSE REQUIREMENTS
t
t
THL
TLH
Rep. Rate
V
v10MHz
(t
(t
F
R
M
)
)
= 1.5V
t
t
W
W
10%
90%
500ns v2.5ns v2.5ns
t
W
V
V
M
M
74LVT646
Product specification
90%
10%
t
R
t
t
TLH
THL
SV00092
(t
(t
0V
0V
AMP (V)
AMP (V)
R
F
)
t
)
F