SN74AVC4T245 4 ビット デュアル電源バス・トランシーバ、電圧変換構成可、3 ステート出力 | TIJ.co.jp

SN74AVC4T245 (供給中) 4 ビット デュアル電源バス・トランシーバ、電圧変換構成可、3 ステート出力

 

推奨代替製品

  • SN74AXC4T245  -  1.2V 未満の IO とグリッチなしの電源投入に対応する、低消費電力でピン互換製品

概要

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 device 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 device 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.

The VCC isolation feature ensures that if either VCC 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 VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

特長

  • Control Inputs VIH/VIL Levels Are
    Referenced to VCCA 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
  • Ioff Supports Partial Power-Down-Mode Operation
  • Maximum 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)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human-Body Model (A114-A)
    • 150-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

機能一覧

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Part number オーダー・オプション Technology Family Application Bits (#) High input voltage (Min) (Vih) High input voltage (Max) (Vih) Output voltage (Min) (V) Output voltage (Max) (V) IOH (Max) (mA) IOL (Max) (mA) Package Group Rating
SN74AVC4T245 ご注文 AVC     UART
JTAG
SPI    
4     0.78     3.6     1.2     3.6     -12     12     SOIC | 16
TSSOP | 16
TVSOP | 16
UQFN | 16
VQFN | 16    
Catalog    
SN74AVC4T234 ご注文 AVC     JTAG     4     0.9     3.6     0.9     3.6     -12     12     uCSP | 11     Catalog    
SN74AVC4T245-Q1 ご注文 AVC     UART
JTAG
SPI    
4     0.78     3.6     1.2     3.6     -12     12     VQFN | 16     Automotive    
SN74AVC4T774 ご注文 AVC     SPI
UART
JTAG    
4     0.78     3.6     1.2     3.6     -12     12     TSSOP | 16
UQFN | 16
VQFN | 16    
Catalog    
SN74AVCH4T245 ご注文 AVC     UART
JTAG
SPI    
4     1.2     3.6     1.2     3.6     -12     12     SOIC | 16
TSSOP | 16
TVSOP | 16
UQFN | 16
VQFN | 16    
Catalog    
SN74AXC1T45 ご注文 AXC     GPIO     1     0.455     3.6     0.65     3.6     -12     12     SC70 | 6
SOT-23 | 6
SOT-5X3 | 6
X2SON | 6
X2SON | 6    
Catalog