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74AVC4T245RSVR-NT

更新时间： 2024-11-29 02:58:27
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德州仪器 - TI /
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描述
Dual-Bit Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

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74AVC4T245RSVR-NT 数据手册

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SN74AVC4T245  
4-BIT DUAL-SUPPLY BUS TRANSCEIVER  
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS  
www.ti.com  
SCES576D–JUNE 2004–REVISED SEPTEMBER 2007  
1
FEATURES  
•
Control Inputs VIH/VIL Levels Are Referenced to  
VCCA Voltage  
•
•
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
•
Fully Configurable Dual-Rail Design Allows  
Each Port to Operate Over the Full 1.2-V to  
3.6-V Power-Supply Range  
ESD Protection Exceeds JESD 22  
–
–
–
8000-V Human-Body Model (A114-A)  
150-V Machine Model (A115-A)  
•
•
I/Os Are 4.6-V Tolerant  
1000-V Charged-Device Model (C101)  
Ioff Supports Partial Power-Down-Mode  
Operation  
•
Maximim 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 1.8 V)  
150 Mbps (Translate to 1.5 V)  
100 Mbps (Translate to 1.2 V)  
D, DGV, OR PW PACKAGE  
(TOP VIEW)  
RSV PACKAGE  
(TOP VIEW)  
RGY PACKAGE  
(TOP VIEW)  
V
V
CCB  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
CCA  
1DIR  
2DIR  
1A1  
1OE  
2OE  
1B1  
16 15 14 13  
1
16  
15  
1DIR  
2DIR  
1A1  
1A2  
2A1  
2A2  
2
3
4
5
6
7
1OE  
2OE  
1B1  
1B2  
2B1  
2B2  
1
2
3
4
12  
11  
10  
9
2B2  
1OE  
14  
13  
12  
11  
10  
1A2  
12 1B2  
V
GND  
GND  
2A2  
CCB  
CCA  
11  
10  
9
2A1  
2B1  
2B2  
GND  
V
2A2  
1DIR  
GND  
5
6
7
8
8
9
DESCRIPTION/ORDERING INFORMATION  
This 4-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed  
to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB  
accepts any supply voltage from 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 operational with VCCA/VCCB as low as 1.2 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 SN74AVC4T245 is designed for asynchronous communication between two data buses. The logic levels of  
the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port  
outputs or place both output ports into the high-impedance mode. 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 is always active and must have a logic HIGH or LOW level  
applied to prevent excess ICC and ICCZ  
.
The SN74AVC4T245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCA  
.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,  
preventing damaging current backflow through the device when it is powered down.  
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2004–2007, 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.  
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