ISL54216 Datasheet, PDF (9/17 Pages) Intersil Corporation – USB 2.0 High-Speed/UART Dual SP3T (Dual 3 to 1 Multiplexer)

ISL54216
POWER
The power supply connected at VDD (pin 11) provides
power to the ISL54216 part. Its voltage should be kept in
the range of 2.7V to 4.6V. In a typical application, V_DD
will be in the range of 2.7V to 4.3V and will be connected
to the battery or LDO of the MP3 player or cellphone.
A 0.01µF or 0.1µF decoupling capacitor should be
connected from the VDD pin to ground to filter out any
power supply noise from entering the part. The capacitor
should be located as close to the VDD pin as possible.
LOGIC CONTROL
The state of the ISL54216 device is determined by the
voltage at the C1 pin (pin 9) and the C0 pin (pin 10).
Refer to the “Truth Table” on page 2.
The C1 pin and C0 pin are internally pulled low through
4MΩ resistors to ground and can be tri-stated or left
floating.
The C1 pin and C0 pin can be driven with a voltage that
is higher than the V_DD supply voltage. They can be
driven up to 5.25V with the V_DD supply in the range of
2.7V to 4.6V. Driving the logic higher than the supply rail
will cause the logic current to increase. With V_DD = 2.7V
and V_LOGIC = 5.25V, I_LOGIC current is approximately
5.5µA.
Logic Control Voltage Levels
With V_DD in the range of 2.7V to 3.6V the logic levels
are: C1, C0 = Logic “0” (Low) when ≤ 0.5V or Floating.
C1, C0 = Logic “1” (High) when ≥ 1.4V.
ALL SWITCHES OFF Mode
If the C1 pin = Logic “0” and C0 pin = Logic “0” the part
will be in the ALL SWITCHES OFF mode. In this mode,
the 3D- and 3D+ data switches, the 2D- and 2D+ data
switches, and the 1D- and 1D+ data switches will be OFF
(high impedance).
The COM pins can accommodate signals that swing
below ground by as much as -2V. This allows an audio
CODEC to be connected to the COM pins when the
device is in the all off state.
USB/UART1 Mode
If the C1 pin = Logic “0” and C0 pin = Logic “1” the part
will go into USB/UART1 mode. The 1D- and 1D+ switches
are ON and the 2D- and 2D+ switches and 3D- and 3D+
will be OFF (high impedance).
USB2 Mode
If the C1 = Logic “1” and C0 pin = Logic “0” the part will
be in the USB/UART2 mode. The 2D- and 2D+ switches
will be ON and the 1D- and 1D+ switches and the 3D-
and 3D+ will be OFF (high impedance).
USB3 Mode
If the C1 pin = Logic “1” and C0 pin = Logic “1” the part
will be in the USB/UART3 mode. The 3D- and 3D+
switches are ON, and the 1D- and 1D+ switches and 2D-
and 2D+ switches will be OFF (high impedance).
Typical Performance Curves T_A = +25°C, Unless Otherwise Specified.
6.7
I_COM = 40mA
6.6
6.5
V_DD = 2.7V
9
V_DD = 2.7V
I_COM = 40mA
8
+85°C
6.4
V_DD = 3.0V
6.3
V_DD = 3.3V
6.2
V_DD = 3.6V
6.1
7
+25°C
6
-40°C
5
6.0
5.9
V_DD = 4.6V
V_DD = 4.0V
4
5.8
0
0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40
V_COM (V)
FIGURE 7. ON-RESISTANCE vs SUPPLY VOLTAGE vs
SWITCH VOLTAGE
3
0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40
V_COM (V)
FIGURE 8. ON-RESISTANCE vs SWITCH VOLTAGE vs
TEMPERATURE
9
FN7701.0
September 27, 2010