PI74AVC16821 데이터 시트보기 (PDF) - Pericom Semiconductor
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PI74AVC16821 Datasheet PDF : 10 Pages
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PI74AVC+16821
2.5V 20-Bit Bus Interface
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PARAMETER MEASUREMENT INFORMATION
VCC = 1.2V and 1.5V ±0.1V
From Output
Under Test
CL = 15pF
(See Note A)
2Ω
2Ω
2xVCC
S1
Open
GND
Load Circuit
Test
tpd
tPLZ/tPZL
tPHZ/tPZH
S1
Open
2 x VCC
GND
Timing
Input
Data
Input
VCC/2
VCC
0V
tsu
th
VCC/2
VCC/2
VCC
0V
Voltage Waveforms
Setup and Hold Times
Input
Output
VCC/2
tPLH
VCC/2
VCC/2
tPHL
VCC
0V
VCC/2
VOH
VOL
Voltage Waveforms
Propagation Delay Times
Input
tW
VCC/2
VCC/2
VCC
0V
Voltage Waveforms
Pulse Duration
Output
Control
(Low Level
Enabling)
tPZL
Output
Waveform 1
S1 at 2 x VCC
(see Note B) tPZH
Output
Waveform 2
S1 at GND
(see Note B)
VCC/2
VCC/2
VCC/2
VCC/2
tPLZ
VCC
0V
VCC
VOL +0.1V
tPHZ
VOH –0.1V
VOL
VOH
0V
Voltage Waveforms
Enable and Disable Times
Figure 1. Load Circuit and Voltage Waveforms
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 impulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50Ω, tR ≤ 2.0ns, tF ≤ 2.0ns.
D. The outputs are measured one at a time with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis
F. tPZL and tPZH are the same as ten
G. tPLH and tPHL are the same as tpd
6
PS8548 07/31/01
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