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TC7MBD3245FK

OCTAL BUS SWITCH

Toshiba 

TC7MBD3245FK

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC7MBD3245FK

Octal Bus Switch

The TC7MBD3245FK provides eight bits of high-speed

TTL-compatible bus switching in a standard ’245 device pinout.

The low on-state resistance of the switch allows connections to be

made with minimal propagation delay.

The device is organized as one 8-bit switch. When output

enable ( OE ) is low, the switch is on and port A is connected to

port B. When OE is high, the switch is open and a

high-impedance state exists between the two ports.

The internal diode which adds to power supply line is enable to

realize the shift of signal level from 5 V to 3.3 V.

All inputs are equipped with protection circuits against static

discharge.

Weight: 0.03 g (typ.)

Features

• Operating voltage: VCC = 4.5~5.5 V

• High speed: tpd = 0.25 ns (max)

• Low on resistance: RON = 5 Ω (typ.)

• ESD performance: Human body model > ±2000 V

Machine model > ±200 V

• Compatible with TTL outputs (control inputs)

• Package: VSSOP (US20)

• Pin compatible with the 74xx245 type.

Functionally equivalent to (FST/CBT) 3245.

Pin Assignment (top view)

NC 1

A1 2

A2 3

A3 4

A4 5

A5 6

A6 7

A7 8

A8 9

GND 10

20 VCC

19 OE

18 B1

17 B2

16 B3

15 B4

14 B5

13 B6

12 B7

11 B8

(top view)

NC-No Internal Connection

000630EBA1

• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general

can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the

buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and

to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or

damage to property.

In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the

most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling

Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc..

• The Toshiba products listed in this document are intended for usage in general electronics applications (computer, personal

equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These Toshiba products are

neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or

failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy

control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control

instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of Toshiba products listed in this document

shall be made at the customer’s own risk.

• The products described in this document are subject to the foreign exchange and foreign trade laws.

• The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by

TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its

use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or

others.

• The information contained herein is subject to change without notice.

2000-07-04 1/6

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