PI74LPT244LE 데이터 시트보기 (PDF) - Pericom Semiconductor
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PI74LPT244LE Datasheet PDF : 8 Pages
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PI74LPT244
3.3V 8-Bit Buffer /Line Driver
Switching Characteristics over Operating Range(1)
LPT244
LPT244A
LPT244C
Parameters
Description
Conditions
Com.
Min.(2) Max
Com.
Min.(2) Max.
Com.
Units
Min.(2) Max.
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tSK(O)
Propagation Delay
DXX to OXX
1.5
6.5
1.5
4.8
1.5
4.1
Output Enable Time
OEx to Oxx
CL = 50pF
1.5
Output Disable Time(3)
OEx to Oxx
RL = 500Ω
1.5
8.0
7.0
1.5
1.5
6.2
1.5
5.8
ns
5.6
1.5
5.2
Output Skew(4)
0.5
0.5
0.5
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. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter is guaranteed but not production tested.
4. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
Packaging Mechanical: 20-pin QSOP (Q)
20
1
.337 8.56
.344 8.74
.150 3.81
.157 3.99
Guage Plane
.010
0.254
Detail A
.008
0.20
MIN.
.008
.013
0.20
0.33
0˚-6˚
.016
.035
0.41
0.89
.041
1.04
REF
.058 REF
1.47
.053 1.35
.069 1.75
SEATING
PLANE
.025
BSC
0.635
.008 0.203
.012 0.305
.004 0.101
.010 0.254
.015 x 45˚
0.38
Detail A
.016 0.41
.050 1.27
.228
.244
5.79
6.19
.007 0.178
.010 0.254
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
06-0181
5
PS2058F 06/05/06
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