ISL54224 Datasheet, PDF (2/18 Pages) Intersil Corporation – High-Speed USB 2.0 (480Mbps) Multiplexer with Overvoltage Protection (OVP) and Overvoltage Indicator Output

ISL54224
Pin Configuration
ISL54224
(10 LD 1.8X1.4 µTQFN)
TOP VIEW
HSD1+ HSD1-
7
OE/ALM 8
4MΩ
VDD 9
6
5 D-
4 GND
OVP
SEL 10
4MΩ
1
2
HSD2- HSD2+
3 D+
ISL54224
(10 LD 3X3 TDFN)
TOP VIEW
PD
SEL 1
LOGIC CONTROL
4MΩ
4MΩ
HSD2- 2
HSD2+ 3
D+ 4
GND 5
OVP
10 VDD
9 OE/ALM
8 HSD1+
7 HSD1-
6 D-
NOTE:
1. Switches Shown for SEL = Logic “1” and OE/ALM = Logic “1”.
Truth Table
OE/ALM SEL HSD1-, HSD1+ HSD2-, HSD2+
0
X
OFF
OFF
1
0
ON
OFF
1
1
OFF
ON
Logic “0” when ≤ 0.5V, Logic “1” when ≥ 1.4V with a 2.7V
to 3.6V Supply.
Pin Descriptions
PIN
µTQFN TDFN NAME
DESCRIPTION
1
2 HSD2- USB Data Port Channel 2
2
3 HSD2+ USB Data Port Channel 2
3
4
D+ USB Data COM Port
4
5
GND Ground Connection
5
6
D- USB Data COM Port
6
7 HSD1- USB Data Port Channel 1
7
8 HSD1+ USB Data Port Channel 1
8
9 OE/ALM Switch Enable/Alarm (open drain
connection)
Drive Low to Open All Switches
Outputs Low when OTV is
Activated
9
10
VDD Power Supply
10
1
SEL Select Logic Control Input
-
PD
PD Thermal Pad. Tie to Ground or
Float
CODEC SUPPLY
2.7V to 3.3V
2.7V to 3.3V
TABLE 1. USB - OVP POSSIBLE SITUATIONS AND TRIP POINT VOLTAGE
TRIP POINT
SWITCH SUPPLY (V_DD)
2.7V to 5.25V
COMs SHORTED TO
VBUS
PROTECTED
Yes
MIN
3.63V
MAX
3.95V
2.7V to 5.25V
-5V
Yes
-0.76V -0.29V
OE/ALM
Low
Low
2
FN6969.0
June 7, 2010