8
PS8354B 09/22/04
PI74ALVTC16245
16-Bit BiDirectional Transceiver
with 3-State Outputs
Test Circuits and Switching Waveforms
Parameter Measurement Information (VDD = 1.8V - 3.6V)
Setup, Hold, and Release Timing
Pulse Width
Switch Position
Propagation Delay
Enable Disable Timing
Data
Input
t
H
VDD
tSU
0V
Timing
Input
V
DD
0V
V
DD/2
VDD/2
Low-High-Low
Pulse
t
W
High-Low-High
Pulse
V
DD
0V
V
DD
0V
V
DD/2
V
DD/2
Input
Opposite Phase
Input Transition
t
PLH
t
PHL
t
PLH
t
PHL
V
DD
0V
V
DD
V
OL
V
DD
0V
Output
V
DD/2
V
DD/2
V
DD/2
Notes:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions
such that the output is LOW except when disabled by
the output control.
Waveform 2 is for an output with internal conditions
such that the output is HIGH except when disabled by
the output control.
C. All input pulses are supplied by generators having the
following characteristics: PRR ≤ 10 MHz, ZO = 50Ω,
t
r
≤ 2ns, t
f
≤ 2ns, measured from 10% to 90%, unless
otherwise specified.
D. The outputs are measured one at a time with one
transition per measurement.
Output
Control
(Active LOW)
Output
Waveform 2
S1 at GND
(see Note B)
t
PZL
t
PLZ
V
DD
0V
V
DD
V
OL
0V
Output
Waveform 1
S1 at 2xV
DD
(see Note B)
+0.15V
-0.15V
V
OH
V
DD
t
PHZ
t
PZH
V
DD/2
V
DD/2
V
DD
/2
tseT1S
t
dp
nepO
t
PLZ
/
t
PZL
Vx2
DD
t
PHZ
/
t
PZH
DNG
Ω
Ω
