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74VCX16245 データシートの表示(PDF) - Pericom Semiconductor

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74VCX16245 2.5V 16-Bit Bidirectional Transceiver with 3-State Outputs Pericom-Semiconductor
Pericom Semiconductor Pericom-Semiconductor
74VCX16245 Datasheet PDF : 7 Pages
1 2 3 4 5 6 7
PI74VCX16245
2.5V 16-Bit Bidirectional Transceiver with 3-State Outputs
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Test Circuits and Switching Waveforms
Parameter Measurement Information (VDD = 1.8V - 3.6V)
From Output
Under Test
30pF
CL
(See Note A)
R1
500
RL
500
2 x VDD
Open
GND
Switch Position
Test
S1
tPD
tPLZ/tPZL
tPHZ/tPZH
Open
2 x VDD
GND
Pulse Width
Low-High-Low
Pulse
Setup, Hold, and Release Timing
Data
Input
Timing
Input
tSU
tH
VDD
VDD/2
0V
VDD
VDD/2
0V
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 follow
ing characteristics:
PRR 10 MHz, ZO = 50,
tR 2ns,
tF 2ns,
measured from 10% to 90%, unless otherwise specified.
D. The outputs are measured one at a time with one transition per
measurement.
High-Low-High
Pulse
Propagaton Delay
Input
tPLH
Output
tPHL
Opposite Phase
Input Transition
Enable Disable Timing
Output
Control
(Active LOW)
tPZL
Output
Waveform 1
S1 at 2xVDD
(see Note B) tPZH
Output
Waveform 2
S1 at GND
(see Note B)
tW
tPLZ
VDD
VDD/2
tPHZ
VDD/2
VDD
VDD/2
0V
VDD
VDD/2
0V
VDD
VDD/2
tPHL
0V
VDD
VDD/2
tPLH
VOL
VDD
VDD/2
0V
VDD
VDD/2
0V
VDD
+0.15V
VOL
-0.15V VOH
0V
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
7
PS8325 09/14/98
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