1

FEATURES

3

2

4

6

1

B

GND

A

DBV PACKAGE

(TOP VIEW)

DCK PACKAGE

(TOP VIEW)

3

2

4

6

1

B

GND

A

3

2

4

6

1

B

GND

A

DRL PACKAGE

(TOP VIEW)

See mechanical drawings for dimensions.

DIR

DIR

DIR

5

5

5

YZP PACKAGE

(BOTTOM VIEW)

A

B

GND

1

4

2

3

6

5

DIR

C1

B1

A1

C2

B2

A2

DESCRIPTION/ORDERING INFORMATION

SN74LVC1T45

SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER

WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

2

• Available in the Texas Instruments NanoFree™

• Max Data Rates

Package

–

420 Mbps (3.3-V to 5-V Translation)

• Fully Configurable Dual-Rail Design Allows

–

210 Mbps (Translate to 3.3 V)

Each Port to Operate Over the Full 1.65-V to

–

140 Mbps (Translate to 2.5 V)

5.5-V Power-Supply Range

–

75 Mbps (Translate to 1.8 V)

• V

• Latch-Up Performance Exceeds 100 mA Per

GND, Both Ports Are in the High-Impedance

JESD 78, Class II

State

• ESD Protection Exceeds JESD 22

• DIR Input Circuit Referenced to V

CCA

–

2000-V Human-Body Model (A114-A)

• Low Power Consumption, 4-µA Max I

CC

–

200-V Machine Model (A115-A)

• ±24-mA Output Drive at 3.3 V

–

1000-V Charged-Device Model (C101)

• I

Operation

This single-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is

translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.

The SN74LVC1T45 is designed for asynchronous communication between two data buses. The logic levels of

the direction-control (DIR) input activate either the B-port outputs or the A-port outputs. The device transmits data

from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the

A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic

preventing damaging current backflow through the device when it is powered down.

state.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

NanoFree is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2003–2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.