SN74AVC32T245_09 Datasheet, PDF (1/20 Pages) Texas Instruments – 32-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

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SN74AVC32T245
32-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES553E – MAY 2004 – REVISED AUGUST 2007
FEATURES
1
•2 Member of the Texas Instruments Widebus+™
Family
• Control Inputs V_IH/V_IL Levels Are Referenced to
V_CCA Voltage
• V_CC Isolation Feature – If Either V_CC Input Is at
GND, Both Ports Are in the High-Impedance
State
• Overvoltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications
• Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over Full 1.2-V to 3.6-V
Power-Supply Range
• I_off Supports Partial-Power-Down Mode
Operation
• I/Os Are 4.6-V Tolerant
• Max Data Rates
– 380 Mbps (1.8-V to 3.3-V Translation)
– 200 Mbps (< 1.8-V to 3.3-V Translation)
– 200 Mbps (Translate to 2.5 V or 1.8V)
– 150 Mbps (Translate to 1.5 V)
– 100 Mbps (Translate to 1.2 V)
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 4000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
DESCRIPTION/ORDERING INFORMATION
This 32-bit noninverting bus transceiver uses two separate configurable power-supply rails. The
SN74AVC32T245 is optimized to operate with V_CCA/V_CCB set at 1.4 V to 3.6 V. It is operational with V_CCA/V_CCB as
low as 1.2 V. 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 SN74AVC32T245 is designed for asynchronous communication between data buses. The device transmits
data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the
direction-control (DIR) input. The output-enable (OE) input can be used to disable the outputs so the buses are
effectively isolated.
The SN74AVC32T245 is designed so that the control pins (1DIR, 2DIR, 3DIR, 4DIR, 1OE, 2OE, 3OE, and 4OE)
are supplied 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, then both ports are in the high-impedance
state.
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
T_A
–40°C to 85°C
ORDERING INFORMATION
PACKAGE ^{(1) (2)}
ORDERABLE PART NUMBER
LFBGA – GKE
SN74AVC32T245GKER
LFBGA – ZKE (Pb-free)
Tape and reel
SN74AVC32T245ZKER
LFBGA – ZRL (Pb-free)
SN74AVC32T245ZRLR
TOP-SIDE MARKING
WY245
(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
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.
Widebus+ is a trademark of Texas Instruments.
2
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2007, Texas Instruments Incorporated