tc7met240afk TOSHIBA Semiconductor CORPORATION, tc7met240afk Datasheet

tc7met240afk

Manufacturer Part Number

tc7met240afk

Description

Octal Bus Buffer

Manufacturer

TOSHIBA Semiconductor CORPORATION

Datasheet

1.TC7MET240AFK.pdf (7 pages)

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Octal Bus Buffer

CMOS octal bus buffers fabricated with silicon gate C

technology. They achieve the high speed operation similar to

equivalent bipolar schottky TTL while maintaining the CMOS

low power dissipation.

active-low output enables. TC7MET244AFK is a non-inverting

3-state buffer, and has two active-low output enables.

address drivers, etc.

without regard to the supply voltage. These structure prevents device destruction due to mismatched supply and

input/output voltages such as battery back up, hot board insertion, etc.

Features

•

The TC7MET240AFK and 244AFK are advanced high speed

The TC7MET240AFK is an inverting 3-state buffer having two

These devices are designed to be used with 3-state memory

The input voltage are compatible with TTL output voltage.

These devices may be used as a level converter for interfacing 3.3 V to 5 V system.

Input protection and output circuit ensure that 0 to 5.5 V can be applied to the input and output

TC7MET240AFK Inverted, 3-State Outputs

TC7MET244AFK Non-Inverted, 3-State Outputs

Note: V

High speed: t

Low power dissipation: I

Compatible with TTL outputs: V

Power down protection is provided on all inputs and outputs.

Balanced propagation delays: t

Low noise:

Pin and function compatible with the 74 series (74AC/HC/F/ALS/LS etc.) 240/244 type.

TC7MET240AFK,TC7MET244AFK

= 0 V

OLP

= 5.6 ns (typ.) (V

= 1.0 V (max)

TOSHIBA CMOS Didital Integrated Circuit Silicon Monolithic

= 4 μA (max) (Ta = 25°C)

pLH

≈ t

= 0.8 V (max)

= 5 V)

= 2.0 V (min)

pHL

MOS

Weight: 0.03 g (typ.)

TC7MET240,244AFK

(Note)

2007-10-19

pins

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tc7met240afk Summary of contents

Page 1

... They achieve the high speed operation similar to equivalent bipolar schottky TTL while maintaining the CMOS low power dissipation. The TC7MET240AFK is an inverting 3-state buffer having two active-low output enables. TC7MET244AFK is a non-inverting 3-state buffer, and has two active-low output enables. ...

Page 2

... G EN (11) 2A1 (13) 2A2 (15) 2A3 (17) 2A4 Truth Table Inputs Don’t care Z: High impedance Y : TC7MET244AFK TC7MET240AFK 1A1 2Y4 2A4 1A2 16 2Y3 2A3 1A3 14 2Y2 ...

Page 3

Absolute Maximum Ratings Characteristics Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC V /ground current CC Power dissipation Storage temperature Note 1: Exceeding any of the absolute maximum ratings, ...

Page 4

... L 15 ⎯ 5.0 ± 0 ⎯ 5.0 ± 0 Ω 5.0 ± 0 Ω 5.0 ± 0 (Note 1) 5.0 ± 0.5 50 ⎯ ⎯ TC7MET240AFK TC7MET244AFK = |t − osHL pHLm pHLn + I ･f /8 (per bit TC7MET240,244AFK Ta = 25° − 40~85°C Min Typ. Max Min Max ⎯ ...

Page 5

Noise Characteristics (Input: t Characteristics Quiet output maximum dynamic V OL Quiet output minimum dynamic V OL Minimum high level dynamic input voltage V Maximum high level dynamic input voltage ns Symbol Test ...

Page 6

Package Dimensions Weight: 0.03 g (typ.) TC7MET240,244AFK 6 2007-10-19 ...

Page 7

RESTRICTIONS ON PRODUCT USE • The information contained herein is subject to change without notice. • TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to ...

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