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SN74AVC4T245RSVR 数据表(PDF) 1 Page - Texas Instruments

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部件名 SN74AVC4T245RSVR
功能描述  Dual-Bit Bus Transceiver with Configurable Voltage Translation and 3-State Outputs
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

SN74AVC4T245RSVR 数据表(HTML) 1 Page - Texas Instruments

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SN74AVC4T245
SCES576G – JUNE 2004 – REVISED NOVEMBER 2014
SN74AVC4T245 Dual-Bit Bus Transceiver with Configurable Voltage Translation
and 3-State Outputs
1 Features
3 Description
This 4-bit noninverting bus transceiver uses two
1
Control Inputs VIH/VIL Levels Are Referenced to
separate configurable power-supply rails. The A port
VCCA Voltage
is designed to track VCCA. VCCA accepts any supply
Fully Configurable Dual-Rail Design Allows Each
voltage from 1.2 V to 3.6 V. The B port is designed to
Port to Operate Over the Full 1.2-V to 3.6-V
track VCCB. VCCB accepts any supply voltage from
Power-Supply Range
1.2 V to 3.6 V. The SN74AVC4T245 is optimized to
operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is
I/Os Are 4.6-V Tolerant
operational with VCCA/VCCB as low as 1.2 V. This
Ioff Supports Partial Power-Down-Mode Operation
allows
for
universal
low-voltage
bidirectional
Maximum Data Rates
translation between any of the 1.2-V, 1.5-V, 1.8-V,
2.5-V, and 3.3-V voltage nodes.
380 Mbps (1.8-V to 3.3-V Translation)
200 Mbps (< 1.8-V to 3.3-V Translation)
The
SN74AVC4T245
device
is
designed
for
asynchronous
communication
between
two
data
200 Mbps (Translate to 2.5 V or 1.8 V)
buses. The logic levels of the direction-control (DIR)
150 Mbps (Translate to 1.5 V)
input and the output-enable (OE) input activate either
100 Mbps (Translate to 1.2 V)
the B-port outputs or the A-port outputs or place both
output ports into the high-impedance mode. The
Latch-Up Performance Exceeds 100 mA Per
device transmits data from the A bus to the B bus
JESD 78, Class II
when the B-port outputs are activated, and from the B
ESD Protection Exceeds JESD 22
bus to the A bus when the A-port outputs are
8000-V Human-Body Model (A114-A)
activated. The input circuitry on both A and B ports is
always active and must have a logic HIGH or LOW
150-V Machine Model (A115-A)
level applied to prevent excess ICC and ICCZ.
1000-V Charged-Device Model (C101)
The SN74AVC4T245 device is designed so that the
2 Applications
control pins (1DIR, 2DIR, 1OE, and 2OE) are
supplied by VCCA.
Personal Electronics
This device is fully specified for partial-power-down
Industrial
applications using Ioff. The Ioff circuitry disables the
Enterprise
outputs,
preventing
damaging
current
backflow
Telecom
through the device when it is powered down.
The VCC isolation feature ensures that if either VCC
Logic Diagram (Positive Logic)
input is at GND, then both ports are in the high-
for 1/2 of SN74AVC4T245
impedance state.
To ensure the high-impedance state during power up
or power down, OE should be tied to VCC through a
pullup resistor; the minimum value of the resistor is
determined by the current-sinking capability of the
driver.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (16)
9.90 mm x 3.91 mm
TVSOP (16)
3.60 mm x 4.40 mm
SN74AVC4T245
TSSOP (16)
5.00 mm x 4.40 mm
VQFN (16)
4.00 mm x 3.50 mm
UQFN (16)
2.60 mm x 1.80 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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