Tool/software:

レベルシフタ SN74AXC4T774PWR の遅延をオシロで確認したところ、

(1) SPI Read:3.3V ⇒ 1.2V バッファ遅延時間 = 28ns

(2) SPI Write:1.2V ⇒ 3.3V バッファ遅延時間 = 14ns

の結果となり、方向により遅延時間に大きな差異が見受けられました。

このことについて以下の質問にご回答お願いいたします。

・方向によって遅延時間が違う場合があるか…

Tool/software:

While programming through Dediprog at J12 header, when the system is in OFF condition the VCCA of U19 is at 0V, VCCB at 1.8V (Powered via Dediprog J12 header) and the /OE is 1.8V(since Dediprog pulls SPI_PROG_L…

Tool/software:

Hello,

I think this IC belongs to Texas Instruments. I want technical datasheet of this IC. Please Provide technical datasheet.

Marking on this IC:-  ZVK 72W

Thank You,

Tool/software:

Hi Team

My customer need 15MHz JTAG solution.

do we have any lower propagation delay solution.

BRs

Brian

Tool/software:

Hi,

I am diagnosing a problem in a board I was given.  And a question is, how does this part behave with partial power?

In particular, the A side is off (no VCCA), the A inputs are not driven, OE* is grounded,…

Tool/software:

Hi Sir,

SPI clock rate around 5MHz

Do you recommend SN74AVC4T774 for the SPI application below?

What should we pay attention to in the application? for example, load capacitance

Do you have any requirements on the…

Tool/software:

Hi Team,

Good day!

I am using SN74AVC4T774RSVR part one of my test card and seeking clarification in the design,

-> VCCA is having 3V3 default and Part A inputs is default Pull-down (all inputs are connected in…

Tool/software:

Hello,

we are using the level-shifter to transfer from 1,8V to 3,3V logical uart level. With our old controller, we had no problems regarding high Iq. now, after controller…

Tool/software:

Hi, I need to connect two PCBs over SPI using wires, which can be as long as 3 to 4 cm. The master and slave are both STM32 MCUs. If this is a risk, is it worth bringing both to an interface board and have a driver…

Tool/software:

Hello TI Team,

Can i use this part with same voltage levels at both nodes.

VCCA = VCCB = any voltage either 1.2V or 1.8V

Thanks

Sanchit

Tool/software:

Hi,

I want to confirm whether SN74AVC4T774 can be used as a buffer for SPI signals with VCCA and VCCB same 3.3V level.

My design includes a microcontroller and processor interfaced with the SPI interface and either…

Tool/software:

Dear TI support team,

Could you provide me SN74AVC4T774 and SN74AXC4T774 Ioz polarity and value depending on junction temperature ?

We found an issue on our design…

Tool/software:

Hello,

I'm looking to use the SN74AVC4T774-Q1. Specifically orderable device 74AVC4T774QWBQBRQ1. This is the BQB (WQFN) package. The datasheet…

Tool/software:

Hi,

I'm trying to run SPI at 50MHz and I need to translate voltages from 1.8V to 1.2V ~ 3.3V.

I'm using the SN74AVC4T774 which works perfectly at up to 30MHz…

Tool/software:

Hello

If the input transition rise or fall rate is out of SPEC,What is the impact on output?

Will the output switch between high and low levels when the input is in the threshold region(0.8V to 2V)?

Tool/software:

In our application, SN74AVC4T774 is used as SPI buffer.

The rising edge of SPI SCLK has a back-hook at the input of SN74AVC4T774, and the voltage is around 1.5V. 

The Min of VIH is 2V in SN74AVC4T774 datasheet.

Tool/software:

Hello

We have such a issue. LDAC signals have a lot of clutter signals during each cold boot from -5℃ before FPGA loading complete . It will cause the DAC work abnormal.

LDAC is always high at room temperature…

Tool/software:

What is the maximum operating junction temperature of the SN74AVC4T774RSVR? Datasheet says 150 C, can you confirm and highlight desired normal operation and damage concerns?

Thanks,

Arash

Tool/software:

Datasheet shows absolute max of +/- 50 mA for continuous output current.   

Is this per pin or per package?  

In other words, Can I safely sink 33 mA each on output 2B1 and 2B2 for a total current sink of 66 mA?

Tool/software:

There is a statement in the datasheet：If the inputs are not driven to either a high VCC state, or a low-GND state, an undesirable larger than expected ICC current may result。

I want to know which pin will result…

Tool/software:

We want to know max drive capacitive load capability for level shifter.

Can anyone help provide max capacitive load capability ? thanks

Hello,

Does anyone know if TI will pre-sort chips before shipping?

For example, we are buying SN74AVC4T774 for use in a product and we want parts with the

faster propagation delays. If we get parts that are on the slower end…

Hello TI,

While referring to SN74AVC4T774RSVR datasheet for Rise and Fall time values, the data sheet shows value in "ns/V".

"Δt/Δv : Input transition rise or fall rate :  5 : ns/V"

This is in contradiction…

Dear,

I use TXB0106 for SPI level shift from 1.8V to 1.2V.When clock data rate is 20M,out waveform is incorrect 

The out waveforms are as follow. 

input is 20M,output…

This is a question for both the AVX and the AVC parts.

1. We are having the VCCA coming up first and the VCCB coming up after a few seconds. In the…