74LVT2245(1998) データシートの表示（PDF） - Philips Electronics

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74LVT2245
(Rev.:1998)

3.3V Octal transceiver with 30Ω termination resistors (3-State)

Philips Electronics 

Philips Semiconductors

3.3V Octal transceiver with 30Ω

termination resistors (3-State)

Product specification

74LVT2245

FEATURES

• 30Ω output termination resistors

• Octal bidirectional bus interface

• 3-State buffers

• Output capability: +12mA/-12mA

• TTL input and output switching levels

• Input and output interface capability to systems at 5V supply

• Bus-hold data inputs eliminate the need for external pull-up

resistors to hold unused inputs

• Live insertion/extraction permitted

• Power-up 3-State

• No bus current loading when output is tied to 5V bus

• Latch-up protection exceeds 500mA per JEDEC Std 17

• ESD protection exceeds 2000V per MIL STD 883 Method 3015

and 200V per Machine Model

DESCRIPTION

The LVT2245 is a high-performance BiCMOS product designed for

VCC operation at 3.3V.

This device is an octal transceiver featuring non-inverting 3-State

bus compatible outputs in both send and receive directions. The

control function implementation minimizes external timing

requirements. The device features an Output Enable (OE) input for

easy cascading and a Direction (DIR) input for direction control.

The 74LVT2245 is designed with 30Ω series resistance in both the

High and Low states of the output. This design reduces line noise in

applications such as memory address drivers, clock drivers, and bus

transceivers/transmitters.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

Tamb = 25°C; GND = 0V

TYPICAL

UNIT

tPLH

Propagation delay

tPHL

An to Bn or Bn to An

CL = 50pF;

VCC = 3.3V

3.2

3.1

ns

CIN

Input capacitance

DIR, OE

VI = 0V or 3.0V

4

pF

CI/O

ICCZ

I/O pin capacitance

Total supply current

Outputs disabled; VI/O = 0V or 3.0V

Outputs disabled; VCC = 3.6V

10

pF

0.13

mA

ORDERING INFORMATION

PACKAGES

20-Pin Plastic SO

20-Pin Plastic SSOP

20-Pin Plastic TSSOP

TEMPERATURE RANGE

–40°C to +85°C

–40°C to +85°C

–40°C to +85°C

OUTSIDE NORTH AMERICA

74LVT2245 D

74LVT2245 DB

74LVT2245 PW

NORTH AMERICA

74LVT2245 D

74LVT2245 DB

7LVT2245PW DH

DWG NUMBER

SOT163-1

SOT339-1

SOT360-1

PIN CONFIGURATION

DIR 1

A0 2

A1 3

A2 4

A3 5

A4 6

A5 7

A6 8

A7 9

GND 10

20 VCC

19 OE

18 B0

17 B1

16 B2

15 B3

14 B4

13 B5

12 B6

11 B7

SV00014

LOGIC SYMBOL

1

DIR

2

A0

3

A1

4

A2

5

A3

6

A4

7

A5

8

A6

9

A7

19

OE

18 B0

17 B1

16 B2

15 B3

14 B4

13 B5

12 B6

11 B7

SV00016

1998 Feb 19

2

853-1828 18985

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