PI74LPT245 Просмотр технического описания (PDF) - Pericom Semiconductor
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PI74LPT245 Datasheet PDF : 4 Pages
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PI74LPT245
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Switching Characteristics over Operating Range(1)
Parameters
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
tSK(o)
Description
Propagation Delay
A to B, B to A
Output Enable Time
OE to A or B
Output Disable Time(4)
OE to A or B
Output Enable Time
T/R to A or B
Output Disable Time(4)
T/R to A or B
Output Skew(5)
Conditions(2)
CL = 50 pF
RL = 500Ω
LPT245
Com.
Min.(3) Max.
1.5
7.0
1.5
8.5
1.5
7.5
1.5
8.5
1.5
7.5
0.5
LPT245A
Com.
Min.(3) Max.
1.5
4.6
1.5
6.2
1.5
5.0
1.5
6.2
1.5
5.0
0.5
LPT245C
Com.
Min.(3) Max.
1.5
4.1
Units
ns
1.5
5.8 ns
1.5
4.8 ns
1.5
5.8 ns
1.5
4.8 ns
0.5 ns
Notes:
1. Propagation Delays and Enable/Disable times are with Vcc = 3.3V ±0.3V, normal range. For Vcc = 2.7V, extended range, all
Propagation Delays and Enable/Disable times should be degraded by 20%.
2. See test circuit and wave forms.
3. Minimum limits are guaranteed but not tested on Propagation Delays.
4. This parameter is guaranteed but not production tested.
5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
4
PS2059A 01/15/97
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