74VCXH16244DTR datasheet(1/11 Pages) ONSEMI

Il numero della parte	74VCXH16244DTR

Spiegazioni elettronici	Low?뭋oltage 1.8/2.5/3.3V 16?묪it Buffer

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Produttore elettronici	ONSEMI [ON Semiconductor]

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June, 2006 − Rev. 5

1

Publication Order Number:

74VCXH16244/D

74VCXH16244

Low−Voltage 1.8/2.5/3.3V

16−Bit Buffer

With 3.6 V−Tolerant Inputs and Outputs

(3−State, Non−Inverting)

The 74VCXH16244 is an advanced performance, non−inverting

16−bit buffer. It is designed for very high−speed, very low−power

operation in 1.8 V, 2.5 V or 3.3 V systems.

When operating at 2.5 V (or 1.8 V) the part is designed to tolerate

voltages it may encounter on either inputs or outputs when interfacing

to 3.3 V busses. It is guaranteed to be overvoltage tolerant to 3.6 V.

The 74VCXH16244 is nibble controlled with each nibble

functioning identically, but independently. The control pins may be

tied together to obtain full 16−bit operation. The 3−state outputs are

controlled by an Output Enable (OEn) input for each nibble. When

OEn is LOW, the outputs are on. When OEn is HIGH, the outputs are

in the high impedance state. The data inputs include active bushold

circuitry, eliminating the need for external pullup resistors to hold

unused or floating inputs at a valid logic state.

Features

• Designed for Low Voltage Operation: VCC = 1.65 V − 3.6 V

• 3.6 V Tolerant Inputs and Outputs

• High Speed Operation: 2.5 ns max for 3.0 V to 3.6 V

3.0 ns max for 2.3 V to 2.7 V

6.0 ns max for 1.65 V to 1.95 V

• Static Drive:

±24 mA Drive at 3.0 V

±18 mA Drive at 2.3 V

±6 mA Drive at 1.65 V

• Supports Live Insertion and Withdrawal

• Includes Active Bushold to Hold Unused or Floating Inputs at a Valid

Logic State

• IOFF Specification Guarantees High Impedance When VCC = 0 V*

• Near Zero Static Supply Current in All Three Logic States (20 mA)

Substantially Reduces System Power Requirements

• Latchup Performance Exceeds ±250 mA @ 125°C

• ESD Performance: Human Body Model >2000 V

Machine Model >200 V

• All Devices in Package TSSOP are Inherently Pb−Free**

*To ensure the outputs activate in the 3−state condition, the output enable pins

should be connected to VCC through a pullup resistor. The value of the resistor

is determined by the current sinking capability of the output connected to the

OE pin.

**For additional information on our Pb−Free strategy and soldering details,

please download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

MARKING DIAGRAM

A

= Assembly Location

WL

= Wafer Lot

YY

= Year

WW

= Work Week

TSSOP−48

DT SUFFIX

CASE 1201

1

48

VCXH16244

AWLYYWW

1

48

http://onsemi.com

Device

Package

Shipping†

ORDERING INFORMATION

74VCXH16244DT

TSSOP

(Pb−Free)

39 / Rail

74VCXH16244DTR

TSSOP

(Pb−Free)

2500 / Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

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