isl54220 Intersil Corporation, isl54220 Datasheet - Page 5

• Manufacturer Part Number: isl54220
• Description: High-speed Usb 2.0 480mbps Multiplexer
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Logic input waveform is inverted for switches that have the opposite
logic sense.
OUTPUT
OUTPUT
SWITCH
SWITCH
SWITCH
LOGIC
INPUT
LOGIC
INPUT
INPUT
V
OUT
V
VDD
VDD
INPUT
FIGURE 1A. MEASUREMENT POINTS
FIGURE 2A. MEASUREMENT POINTS
0V
0V
0V
0V
t
ON
50%
5
90%
t
Repeat test for all switches.
OFF
V
V
t
HSDX
D
OUT
r
ON
FIGURE 2. BREAK-BEFORE-MAKE TIME
= V
40mA
1
t
t
FIGURE 1. SWITCHING TIMES
/40mA
90%
FIGURE 3. r
r
f
< 20ns
< 20ns
90%
V
1
ISL54220
HSDx
Dx
ON
TEST CIRCUIT
GND
Repeat test for all switches. C
capacitance.
Repeat test for all switches. C
capacitance.
V
INPUT
SWITCH
V
INPUT
DD
VIN
VIN
OE
SEL
V
C
INPUT
OV OR VDD
V
FIGURE 1B. TEST CIRCUIT
FIGURE 2B. TEST CIRCUIT
HSD2x
HSD1x
SEL
OUT
SEL
HSDxx
=
V
V (INPUT)
V
GND
DD
DD
L
L
GND
includes fixture and stray
includes fixture and stray
C
C
OE
OE
----------------------- -
R
L
Dx
R
Dx
+
L
r
ON
50Ω
50Ω
R
R
December 16, 2008
L
L
V
OUT
V
OUT
10pF
FN6819.0
C
10pF
L
C
L