74LVC16245ADL Просмотр технического описания (PDF) - Philips Electronics

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74LVC16245ADL

16-bit bus transceiver with direction pin; 5V tolerant (3-State)

Philips Electronics 

Philips Semiconductors

16-bit bus transceiver with direction pin; 5V tolerant

(3-State)

Product specification

74LVC16245A/

74LVCH16245A

FEATURES

• 5 volt tolerant inputs/outputs for interfacing with 5V logic

• Wide supply voltage range of 1.2V to 3.6V

• Complies with JEDEC standard no. 8-1A

• CMOS low power consumption

• MULTIBYTETM flow-through standard pin-out architecture

• Low inductance multiple power and ground pins for minimum

noise and ground bounce

• Direct interface with TTL levels

• High impedance when VCC = 0

• All data inputs have bus hold (74LVCH16245A only)

PIN CONFIGURATION

1DIR 1

1B0 2

1B1 3

GND 4

1B2 5

1B3 6

VCC1 7

1B4 8

1B5 9

GND 10

48 1OE

47 1A0

46 1A1

45 GND

44 1A2

43 1A3

42 VCC2

41 1A4

40 1A5

39 GND

DESCRIPTION

The 74LVC(H)16245A is a high-performance, low-power,

low-voltage, Si-gate CMOS device, superior to most advanced

CMOS compatible TTL families. Inputs can be driven from either

3.3V or 5V devices. In 3-State operation, outputs can handle 5V.

These features allow the use of these devices in a mixed 3.3V/5V

environment.

The 74LVC(H)16245A is a 16-bit transceiver featuring non-inverting

3-State bus compatible outputs in both send and receive directions.

The 74LVC(H)16245A features two output enable (nOE) inputs for

easy cascading and two send/receive (nDIR) inputs for direction

control. nOE controls the outputs so that the buses are effectively

isolated. This device can be used as two 8-bit transceivers or one

16-bit transceiver.

The 74LVCH16245A bus hold data inputs eliminates the need for

extreme pull up resistors to hold unused inputs.

1B6 11

1B7 12

2B0 13

2B1 14

GND 15

2B2 16

2B3 17

VCC1 18

2B4 19

2B5 20

GND 21

2B6 22

2B7 23

2DIR 24

38 1A6

37 1A7

36 2A0

35 2A1

34 GND

33 2A2

32 2A3

31 VCC2

30 2A4

29 2A5

28 GND

27 2A6

26 2A7

25 2OE

SW00198

ORDERING INFORMATION

PACKAGES

48-Pin Plastic SSOP Type III

48-Pin Plastic TSSOP Type II

48-Pin Plastic SSOP Type III

48-Pin Plastic TSSOP Type II

TEMPERATURE RANGE

–40°C to +85°C

–40°C to +85°C

–40°C to +85°C

–40°C to +85°C

OUTSIDE NORTH AMERICA

74LVC16245A DL

74LVC16245A DGG

74LVCH16245A DL

74LVCH16245A DGG

NORTH AMERICA

VC16245A DL

VC16245A DGG

VCH16245A DL

VCH16245A DGG

DWG NUMBER

SOT370-1

SOT362-1

SOT370-1

SOT362-1

QUICK REFERENCE DATA

GND = 0V; Tamb = 25°C; tr = tf ≤ 2.5ns

SYMBOL

PARAMETER

CONDITIONS

tPHL/tPLH

Propagation delay

An to Bn;

Bn to An

CL = 50pF

VCC = 3.3V

CI

Input capacitance

CI/O

Input/output capacitance

CPD

Power dissipation capacitance per buffer

VI = GND to VCC1

NOTES:

1. CPD is used to determine the dynamic power dissipation (PD in µW):

PD = CPD × VCC2 × fi + S (CL × VCC2 × fo) where:

fi = input frequency in MHz; CL = output load capacity in pF;

fo = output frequency in MHz; VCC = supply voltage in V;

S (CL × VCC2 × fo) = sum of the outputs.

TYPICAL

3.0

5.0

10

30

UNIT

ns

pF

pF

pF

1997 Sep 25

2

853-2013 18424

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