Diodes 74LVC1T45 Instrukcja Użytkownika Pobierz pdf

74LVC1T45

Document number: DS35804 Rev. 2 - 2

1 of 14

www.diodes.com

June 2013

74LVC1T45

SINGLE BIT DUAL POWER SUPPLY TRANSLATING

TRANSCEIVER WITH 3 STATE OUTPUTS

Description

The 74LVC1T45 is a single bit, dual supply transceiver with 3-state

outputs suitable for transmitting a single logic bit across different

voltage domains. The A input/output pin is designed to track V

CCA

while the B input/output tracks V

CCB

. This arrangement allows for

universal low-voltage translation between any voltages from 1.65V to

5.5V. The Direction pin (DIR) controls the direction of the transceiver

and in a logic voltage related to V

CCA

. When a high logic level is

applied to DIR the A pin becomes an input and the B pin becomes the

output. Conversely the roles of A and B are reversed when DIR is

asserted low.

The 3-state feature occurs when either of the power supply voltages

are zero. This is also an Ioff feature and allows for the output to

remain in a high impedance state with both power supplies at 0V

preventing and damaging backflow currents and providing power

down electrical isolation up to 5.5V as not to interfere with any logic

activity on pin A or B.

Features

• Wide Supply Voltage Range:

 V

(A): from 1.65V to 5.5V

 V

(B): from 1.65V to 5.5V

• ± 24mA Output Drive at 3.3V

• CMOS low power consumption 16µA maximum I

• High Noise Immunity -- (100mV hysteresis typical)

• I

OFF

Supports Partial-Power-Down Mode Operation

• I

OFF

controlled by either V

being at 0 V

• Inputs accept up to 5.5V

• ESD Protection Exceeds JESD 22

 200-V Machine Model (A115-A)

 2000-V Human Body Model (A114-A)

 1000 V Charged Device Model ( C101)

• Latch-Up Exceeds 100mA per JESD 78, Class II

• X2-DFN1409-6 package designed as a direct replacement for

chip scale packaging.

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

(

Top View

)

X2-DFN1410-6

GND

DIR

Vcc(A) Vcc(B)

X2-DFN1409-6

Chip Scale

Alternative

GND

DIR

Vcc(A)

Vcc(B)

1 6

(

Bottom View

)

(

Top View

)

X2-DFN1010-6

GND

3 4

DIR

Vcc(A) Vcc(B)

SOT26 SOT363 SOT563

(Top View)

GND

Vcc(A)

Vcc(B)

DIR

Applications

• Voltage Level Translation

Well suited to join logic types operating at different voltages

• Power Down Signal Isolation

If either voltage domain is turned off the signal is isolated and

there is no loading on signal lines

• Wide array of products such as:

 Cell Phones, Tablets, E-Readers

 PCs, notebooks, netbooks, ultrabooks

 Networking, routers, gateways

 Computer peripherals, hard drives, CD/DVD ROM

 TV, DVD, DVR, set top box

 Personal Navigation / GPS

 MP3 players ,Cameras, Video Recorders

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Click for Ordering Information

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Strona 1

74LVC1T45 Document number: DS35804 Rev. 2 - 2 1 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 SINGLE BIT DUAL POWER SUPPLY TRANSL

Strona 2

74LVC1T45 Document number: DS35804 Rev. 2 - 2 10 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Package Outline Dimensions (All

Strona 3

74LVC1T45 Document number: DS35804 Rev. 2 - 2 11 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Package Outline Dimensions (cont

Strona 4

74LVC1T45 Document number: DS35804 Rev. 2 - 2 12 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Suggested Pad Layout Please see

Strona 5

74LVC1T45 Document number: DS35804 Rev. 2 - 2 13 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Suggested Pad Layout (cont.) Ple

Strona 6

74LVC1T45 Document number: DS35804 Rev. 2 - 2 14 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 IMPORTANT NOTICE DIODES INCORPO

Strona 7

74LVC1T45 Document number: DS35804 Rev. 2 - 2 2 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Pin Descriptions Pin Name Pin Func

Strona 8 - C

74LVC1T45 Document number: DS35804 Rev. 2 - 2 3 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Recommended Operating Conditions

Strona 9 - Transceiver

74LVC1T45 Document number: DS35804 Rev. 2 - 2 4 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Electrical Characteristics (@TA =

Strona 10 - 74LVC1T45

74LVC1T45 Document number: DS35804 Rev. 2 - 2 5 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Electrical Characteristics (@TA =

Strona 11

74LVC1T45 Document number: DS35804 Rev. 2 - 2 6 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Package Characteristics (VCC = 3.3

74LVC1T45 Document number: DS35804 Rev. 2 - 2 7 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Switching Characteristics (cont.)

Strona 13

74LVC1T45 Document number: DS35804 Rev. 2 - 2 8 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Parameter Measurement Information

Strona 14

74LVC1T45 Document number: DS35804 Rev. 2 - 2 9 of 14 www.diodes.com June 2013 © Diodes Incorporated 74LVC1T45 Ordering Information 74LVC1T 45X

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