TC7WPB306,307FC/FK
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC7WPB306FC,TC7WPB306FK
TC7WPB307FC,TC7WPB307FK
Low Voltage/Low Power 2-Bit Dual Supply Bus Switch
The TC7WPB306 and TC7WPB307 are high-speed CMOS
two-bit bus switches with low ON-resistance that allow
interfacing between different voltage nodes.
These devices have two separate power supplies, VL for a 1.8-V,
2.5-V or 3.3-V bus and VH for a 2.5-V, 3.3-V or 5.0-V bus.
For bidirectional level-shifting, the VH pin is connected to a
high-voltage power supply through a bias resistor, and pull-up
resistors are connected between the high-voltage power supply
and the switch.
The enable signal can be used to disable the device so that the
buses are effectively isolated.
For the TC7WPB306, Output Enable (OE) is active-High: When
OE is High, the switch is on; when Low, the switch is off. For the
TC7WPB307, Output Enable (
OE
) is active-Low: When
OE
is
Low, the switch is on; when High, the switch is off.
The TC7WP306 and TC7WP307 support power-down protection
by incorporating 5.5-V-tolerant control inputs.
The bus switch channels are fabricated with NMOS technology.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
TC7WPB306FC, TC7WPB307FC
TC7WPB306FK, TC7WPB307FK
Weight
CSON8-P-0.4
SSOP8-P-0.50A
: 0.002 g (typ.)
: 0.01 g (typ.)
Features
•
•
•
•
•
•
•
Operating voltage: 1.8-V to 2.5-V, 1.8-V to 3.6-V, 1.8-V to 5.5-V, 2.3-V to 3.6-V, 2.3-V to 5.5-V or 3.0-V to 5.5-V
bidirectional interface
Operating voltage: VL
=
1.65 to 5.0 V, VH
=
VL
+
0.5 to 5.5 V
High-speed operation: t
pd
=
0.12ns(max)
(VL
=
3.0 V, VH
=
4.5 V)
Low ON-resistance: R
ON
=
3.0
Ω
(typ.)
(ON-resistance test circuit: V
IS
=
0 V, I
IS
=
30 mA, VH
=
4.5 V)
ESD performance: Machine model
≥ ±200
V
Human body model
≥ ±2000
V
5.5-V tolerance and power-down protection at the Output Enable input.
Packages: CSON8 (CST8), SSOP8 (US8)
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TC7WPB306,307FC/FK
Absolute Maximum Ratings
(Note)
Characteristics
Power supply voltage
Control input voltage
(OE (306)/
OE
(307))
Switch input/output voltage
Clump diode current
Switch input/output current
DC V
CC
/ground current per supply pin
Power dissipation
Storage temperature
Symbol
VL
VH
V
IN
V
S
I
IK
I
S
I
VL
I
VH
P
D
T
stg
Rating
−0.5
to 7.0
−0.5
to 7.0
−0.5
to 7.0
−0.5
to 7.0
−50
128
±25
±25
150 (CSON8)
200 (SSOP8)
−65
to 150
Unit
V
V
V
mA
mA
mA
mW
°C
Note: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even
destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if
the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum
ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Operating Ranges
(Note 1)
Characteristics
Power supply voltage
(Note 2)
Control input voltage
Switch input/output voltage
Operating temperature
Control input rise and fall times
Symbol
VL
VH
V
IN
V
S
T
opr
dt/dv
Rating
1.65 to 5.0
2.3 to 5.5
0 to 5.5
0 to 5.5
−40
to 85
0 to 10
Unit
V
V
V
°C
ns/V
Note 1: The operating ranges must be maintained to ensure the normal operation of the device.
Note 2: The voltage difference between the VL and the VH must be 0.5 V or greater. (VL
<
VH)
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2007-10-19
TC7WPB306,307FC/FK
Application Circuit
V
CCB
100 kΩ
V
CCA
TC7WPB306
TC7WPB307
Rpu
Rpu
VL
A1
A2
GND
VH
B1
B2
OE,
OE
Rpu
Rpu
C
V
CCA
System
V
CCB
System
TC7WPB306
ON
OFF
An and Bn can be used for bidirectional
signal transmission.
TC7WPB307
OFF
ON
Figure 1
Application Circuit Diagram
The voltage difference between the (low-voltage) V
CCA
system and the (high-voltage) V
CCB
system must be 0.5
V or greater. (V
CCA
<
V
CCB
)
For level-shifting between the V
CCA
and V
CCB
systems, connect a bias resistor between the VH pin and the
V
CCB
system, and also connect pull-up resistors to An and Bn pins.
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