AT16373 Просмотр технического описания (PDF) - Atmel Corporation
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AT16373 Datasheet PDF : 6 Pages
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Test Circuits(1,2)
VCC
7.0V
Pulse
Generator
500Ω
VIN
VOUT
D.U.T.
50 pF
RT
500Ω
CL
Note: 1. Pulse Generator: Rate ≤ 1.0 MHz, tF ≤ 2.5 ns,
tR ≤ 2.5 ns.
2. AC tests are done with a single bit switching, and
timings need to be derated when multiple outputs
are switching in the same direction simultaneously.
This derating should not exceed 0.5 ns for 16 inputs
switching simultaneously.
Switch Position
Test
Switch
Open Drain
Disable Low
Enable Low
Closed
All Other Tests
Open
Definitions:
CL = Load capacitance; Includes jig and probe capacitance.
RT = Termination resistance; Should be equal to ZOUT of the
Pulse Generator.
IOL Pull Down Current
160
120
80
40
0
-40
Time
4.0
3.5
IOL
3.0
Output, V
2.5
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
Ground Bounce for High to Low
Transitions(1)
3.5
gnd - measured on
3.0
output with input
held constant
2.5
2.0
output
1.5
1.0
0.5
VOLP
0.0
VOLV
-0.5
Time
Supply Bounce for Low to High
Transitions(2)
4.5
4
3.5
VOHV
3
2.5
2
VOHP
vcc -
measured on
output with
input held
constant
output
1.5
1
0.5
0
Time
5-18
AT16373
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