PI74LPT16827
3.3V 20-BIT BUFFERS
Switching Characteristics over Operating Range(1)
1
2
LPT16827A
Com.
Min.(3)
LPT16827B
Com.
LPT16827C
Com.
Parameters Description
Conditions(2)
Max.
Min.(3)
Max.
Min.(3)
Max.
Units
t
t
PLH
PHL
Propagation Delay
to Y
CL
RL
CL
RL
CL
RL
CL
RL
CL
RL
CL
RL
= 50 pF
= 500
= 300 pF(4)
= 500
= 50 pF
= 500
= 300 pF(4)
= 500
= 50 pF(4)
= 500
= 50 pF
= 500
1.5
1.5
1.5
1.5
1.5
1.5
6.5
1.5
5.0
1.5
1.5
1.5
1.5
1.5
1.5
4.4
ns
D
N
N
Ω
15.0
9.5
1.5
1.5
1.5
1.5
1.5
13.0
8.0
10.0
7.0
ns
ns
ns
ns
ns
3
Ω
t
t
PZH
PZL
Output Enable Time
OE to Y
N
N
Ω
23.0
8.5
15.0
6.0
14.0
5.7
4
5
Ω
t
t
PHZ
PLZ
Output Disable Time(4)
OE to Y
N
N
Ω
10.0
7.0
6.0
Ω
t
SK(o)
Output Skew(5)
—
0.5
—
0.5
—
0.5
ns
6
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 waveforms.
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
7
guaranteed by design.
8
9
10
11
12
13
14
15
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
PS2075A 01/16/97
5
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