Datasheet > 74ETL16245

74ETL16245

更新时间： 2024-11-02 03:07:43

品牌	Logo	应用领域
美国国家半导体 - NSC		开关
页数	文件大小	规格书
10页	181K
描述
16-Bit Data Transceiver with Incident Wave Switching

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中文翻译

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数据手册

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74ETL16245 数据手册

PRELIMINARY

May 1994

54/74ETL16245 16-Bit Data

Transceiver with Incident Wave Switching

Improved TTL-compatible input threshold range

General Description

The 54/74ETL16245 contains sixteen non-inverting bidirec-

60 mA,

High drive TTL-compatible outputs (I

90 mA)

tional buffers with TRI-STATE outputs designed with inci-

dent wave switching, live insertion support and enhanced

noise margin for TTL backplane applications.

Supports 25X incident wave switching on the A port

BiCMOS design significantly reduces power dissipation.

Distributed V

high-speed switching noise

and GND pin configuration minimizes

Both the A and B ports include a bus hold circuit to latch the

output to the value last forced on that pin.

25X series-dampening resistor on B-port

Available in 48-pin SSOP and ceramic flatpak

Guaranteed output skew

The B port of this device includes 25X series output resis-

tors, which minimize undershoot and ringing.

Guaranteed simultaneous switching noise level and

dynamic threshold performance

Features

Supports the VME64 ETL specification

Guaranteed latchup protection

Functionally and pin compatible with industry standard

TTL 16245 SSOP pinout

Logic Symbol

Connection Diagram

Pin Assignment for

SSOP and Flatpak

TL/F/11654–1

Pin Description

Pin Names

Description

DIR

Transmit/Receive Input

Output Enable Input (Active LOW)

Backplane Bus Data

Local Bus Data

TL/F/11654–2

TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.

1995 National Semiconductor Corporation

TL/F/11654

RRD-B30M105/Printed in U. S. A.

12 3 4 5 6 7...10

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