SN74AVC2T45-Q1 Datasheet, PDF (1/21 Pages) Texas Instruments – DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SN74AVC2T45-Q1
www.ti.com
SCES813 – JUNE 2010
DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
Check for Samples: SN74AVC2T45-Q1
FEATURES
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• Qualified for Automotive Applications
• Control Inputs V_IH/V_IL Levels Are Referenced to
V_CCA Voltage
• Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the Full 1.2-V to
3.6-V Power-Supply Range
• I/Os Are 4.6-V Tolerant
• I_off Supports Partial-Power-Down Mode
Operation
• Max Data Rates
– 500 Mbps (1.8-V to 3.3-V Translation)
– 320 Mbps (<1.8-V to 3.3-V Translation)
– 320 Mbps (Translate to 2.5 V or 1.8 V)
– 280 Mbps (Translate to 1.5 V)
– 240 Mbps (Translate to 1.2 V)
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 8000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
DCU PACKAGE
(TOP VIEW)
V_CCA 1
A1 2
A2 3
GND 4
8 V_CCB
7 B1
6 B2
5 DIR
DESCRIPTION
This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is
designed to track V_CCA. V_CCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track
V_CCB. V_CCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional
translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.
The SN74AVC2T45 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
HIGH or LOW level applied to prevent excess I_CC and I_CCZ.
The SN74AVC2T45 is designed so that the DIR input is powered by V_CCA.
This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
The V_CC isolation feature ensures that if either V_CC input is at GND, both ports are in the high-impedance state.
T_A
–40°C to 105°C
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
VSSOP – DCU
Reel of 3000
CAVC2T45TDCURQ1
TOP-SIDE MARKING
SBUI
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated