Toshiba TC7WBL126AFK Technical data

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TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC7WBL126AFK

Low-Voltage Dual Bus Switch

The TC7WBL126AFK provides two bits of low-voltage
high-speed bus switching. The low ON-resistance of the switch
allows connections to be made with minimal propagation delay
and while maintaining CMOS low power dissipation.

The device comprises dual 2-bit switches with separate bus
enable (OE) signals. When OE is high, the switch is on and port A
is connected to port B. When OE is low, the switch is off and a
high-impedance state exists between the two ports.

All inputs are equipped with protection circuits to guard
against static discharge.

Features

Weight: 0.01 g (typ.)

TC7WBL126AFK

• Operating voltage range: VCC = 2 to 3.6 V

• High speed: t

• Ultra-low ON-resistance: R

• ESD performance: Machine model ≥ ±200 V

Human body model ≥ ±2000 V

• Power-down protection provided on inputs (OE input only)

• Package: US8

Pin Assignment

= 0.31 ns (max) @ 3 V

pd

(top view)

VCC

8

1 2 3 4

OE1

B1

OE2

7 6 5

W L A

1 2 6

A1 B2

GND

= 5 Ω (typ.) @ 3 V

ON

A2

1

2007-10-19

Truth Table

TC7WBL126AFK

Inputs

OE

H A port = B port

L Disconnect

Function

Logic Diagram

A1 B1

OE1

Absolute Maximum Ratings

Characteristic Symbol Rating Unit

Power supply range V

Control pin input voltage V

Switch terminal I/O voltage V

current

Switch I/O current I

Power dissipation P

DC VCC/GND current ICC/I

Storage temperature T

Control input pin −50 Clump diode

Switch terminal

(Note) (Ta = 25°C)

−0.5~4.6 V

−0.5~4.6 V

−0.5~Vcc+0.5 V

±50

128 mA

200 mW

±100 mA

−65~150 °C

I

CC

IK

stg

IN

S

S

D

GND

A2 B2

OE2

mA

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

Characteristic Symbol Rating Unit

Power supply voltage V

Control pin input voltage V

Switch I/O voltage V

Operating temperature T

Input rise and fall time dt/dv 0~10 ns/V

(Note)

CC

IN

opr

S

2.0~3.6 V

0~3.6 V

0~Vcc V

−40~85 °C

Note: The operating ranges must be maintained to ensure the normal operation of the device.

Unused inputs must be tied to either VCC or GND.

2

2007-10-19