Toshiba TC7WB383FK Technical data
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TOSHIBA CMO S Digital I ntegrat ed Circ uit Silicon Monolithic
TC7WB383FK
2-Bit Bus Exchange Switch
The TC7WB383FK is a low on-resistance, high-speed CMOS
2-bit bus exchange switch. This bus switch allows the connections
or disconnections to be made with minimal propagation delay
while maintaining Low power dissipation which is the feature of
CMOS.
When output enable (OE) is at high level, the switches are off.
When at low level, the switches are on, and by the logic of EX
terminal, It can choose whether 2 bits data are transferred to the
corresponding terminal as it is, or the data are transferred to a
terminal with exchanging data line. Therefore it may be used as
2 to 1 multiplexer switch.
Since the switch channels consist of N type MOSFET, the high
level output voltage is provided about 1 V lower than V
All inputs are equipped with protection circuits to protect the
device from static discharge.
CC
level.
Features
Weight: 0.01 g (typ.)
TC7WB383FK
• Operating voltage: V
• High speed operation: t
• Ultra-low on resistance: RON = 5 Ω (typ.)
• Electro-static discharge (ESD) performance: ±200 V or more (JEITA)
±2000 V or more (MIL)
• TTL level input (control input)
• Package: US8
Pin Assignment
VCC 8 C1 D1 EX
7 6
3 8 3
1 2 3 4
A1 B1
OE
= 4.5~5.5 V
CC
pd
(top view)
W B
GND
= 0.25 ns (max)
5
1
2001-09-17
Truth Table
EX A1 B1 C1 D1 Function
OE
H X Hi-Z Disconnect
L L A1 = C1, B1 = D1 Connect
L H A1 = D1, B1 = C1 Exchange
System Diagram
OE
EX
TC7WB383FK
A1
B1 D1
C1
Maximum Ratings
Characteristics Symbol Rating Unit
Power supply voltage V
Control pin input voltage V
Switch terminal I/O voltage V
Clump diode current IIK −50 mA
Switch I/O current I
Power dissipation P
DC VCC/GND current ICC/I
Storage temperature T
CC
IN
S
S
D
GND
stg
−0.5~7.0 V
−0.5~7.0 V
−0.5~7.0 V
128 mA
200 mW
±100 mA
−65~150 °C
Recommended Operating Conditions
Characteristics Symbol Rating Unit
Power supply voltage V
Control pin input voltage V
Switch I/O voltage V
Operating temperature T
Control pin input rise/fall time dt/dv 0~10 ns/V
CC
IN
opr
S
4.5~5.5 V
0~5.5 V
0~5.5 V
−40~85 °C
2
2001-09-17
Electrical Characteristics
TC7WB383FK
DC Characteristics
Characteristics Symbol Test Condition
Control pin input
voltage
Input leakage current I
Power off leakage current I
Off-state leakage current
(switch off)
ON resistance (Not e 2) R
Quiescent supply current
“H” level
“L” level V
(Ta ==== −−−−40~85°C)
VIH 4.5~5.5 2.0
4.5~5.5 0.8
IL
IN
A, B, OE = 0~5.5 V 0 ±1.0 µA
OFF
A, B = 0~5.5 V, OE = V
I
SZ
ON
ICC
VIN = 3.4 V (one input) 5.5 2.5 mA
∆I
CC
V
CC
VIN = 0~5.5 V 4.5~5.5 ±1.0 µA
CC
VIS = 0 V
VIS = 2.4 V, IIS = 15 mA 4.5 10 15
= VCC or GND
V
IN
I
= 0
OUT
IIS = 64 mA 4.5 5 7
= 30 mA 4.5 5 7
I
IS
4.5~5.5 ±1.0 µA
5.5 10 mA
Min
(V)
Typ.
(Note 1)
Note 1: The typical values are at VCC = 5 V, Ta = 25°C.
Note 2: Measured by the voltage drop between A and B pins at the indicated current through the switch. On
resistance is determined by the lower of the voltages on two (A or B) pins.
AC Characteristics
(Ta ==== −−−−40~85°C)
Max Unit
V
Ω
Characteristics Symbol Test Condition
Propagation delay time
(bus to bus)
Propagation delay time
(EX to bus)
Output enable time
Output disable time
t
pLH
Figure 1, Figure 2 (Note 3) 4.5 0.25 ns
t
pHL
t
pLH
Figure 1, Figure 3 4.5 4.5 ns
t
pHL
t
pZL
Figure 1, Figure 4 4.5 4.5 ns
t
pZH
t
pLZ
Figure 1, Figure 4 4.5 5.5 ns
t
pHZ
V
CC
Min Max Unit
(V)
Note 3: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay
other than the RC delay of the typical on resistance of the switch and the 50 pF load capacitance, when
driven by an ideal voltage the source (zero output impedance).
Capacitive Characteristics
Characteristics Symbol Test Condition
Control pin input capacitance CIN (Note 4) 5.0 3 pF
Switch terminal capacitance C
(Ta ==== 25°C)
OE
I/O
V
CC
= VCC (Note 4) 5.0 17 pF
Typ. Unit
(V)
Note 4: This item is guaranteed by design.
3
2001-09-17
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