Answered

• SN74HCS594: Difference to SN74HCS595

  

  Dharmesh Joshi

  Resolved

  Part Number: SN74HCS594 Other Parts Discussed in Thread: SN74HCS595 Tool/software: Hi I need 16 additional GPIO to drive some SSR each, requiring 5mA I am planning to use SN74HCS595, but how is this SN74HCS594 any different to this devi Post ce…

  • Resolved

  • 4 months ago
  • Logic
  • Logic forum

• SN74HCS594: SN74HCS594PWR_Input Clock SRCLK and RCLK

  

  Shiva Kiran

  TI Thinks Resolved

  Part Number: SN74HCS594 Tool/software: Hello, For Shift register part SN74HCS594PWR, there are two input clock pins which are Shift register clock(SRCLK) and Output register clock(RCLK). There is a serial Input "SER" pin. 1. While the external source…

  • over 1 year ago
  • Logic
  • Logic forum
Answered

• SN74HCS594: Table 8-1

  

  Shota Mago

  Resolved

  Part Number: SN74HCS594 Hi team, Table 8-1 of SN74HCS594 and SN74HCS594-Q1 are different. It looks SN74HCS594's table is wrong. Should we believe Table 8-1 of Q1 datasheet? [Non-Q1] [Q1] Best regards, Shota Mago

  • Resolved

  • over 2 years ago
  • Logic
  • Logic forum
Answered

• SN74HCS594: /SRCLR pin treatment on no use case.

  

  Motoyasu Hattori

  Resolved

  Part Number: SN74HCS594 Hi, My customer plans NOT to use Clear on Shift register of SN74HCS594BQBR . Which is recommended, "/SRCLR pin is connect with VDD directly" or "/SRCLR pin is connected with VDD through 10k_ohm pull-up resistor"? Please advise…

  • Resolved

  • over 2 years ago
  • Logic
  • Logic forum
Answered

• SN74HCS594: VOL Spec extrapolation

  

  Cameron Wutzke

  Resolved

  Part Number: SN74HCS594 Hi! Hoping for clarification how to calculate VOL spec from datasheet. Say VCC = 5V and higher current, how could I calculate this?

  • Resolved

  • over 2 years ago
  • Logic
  • Logic forum
Answered

• SN74HCS594: Hold time requirement of RCLK w.r.t. nSRCLR

  

  Sven Probst

  Resolved

  Part Number: SN74HCS594 Other Parts Discussed in Thread: SN74LVC1G04 Dear TI experts, we want to use a chain of SN74HCS594 devices as an IO expander controlled via SPI. The clock of the parallel output register (of all devices in the chain) will be connected…

  • Resolved

  • over 4 years ago
  • Logic
  • Logic forum

• SN74HCS594-Q1: Operating current question

  

  Zirui Su

  TI Thinks Resolved

  Part Number: SN74HCS594-Q1 Hi team Here I have a question about its operating current. After the chip is powered on, what is the device working current? I see a 20mA in the datasheet or what value is the chip working current? At present, customer…

  • over 4 years ago
  • Logic
  • Logic forum

• SN74HCS594-Q1: LED flashing when doing the BCI test

  

  Zirui Su

  TI Thinks Resolved

  Part Number: SN74HCS594-Q1 Hi team, My customer has encountered an issue about the LED flashing when doing the BCI test. Issue description: Customer loaded the data into the SN74HCS594-Q1, (all output set to 1), during BCI test we do not modify…

  • over 4 years ago
  • Logic
  • Logic forum

• SN74HCS594-Q1: SRCLK and RCLK frequency requirement of the device

  

  Zirui Su

  TI Thinks Resolved

  Part Number: SN74HCS594-Q1 Hi team I need your confirm that: Is there a frequency requirement of SRCLK and RCLK? I do not know whether there is a frequency requirement of the SRCLK and RCLK? What does the clock frequency mean? Does it refer to SRCLK…

  • over 4 years ago
  • Logic
  • Logic forum

• SN74HCS594-Q1: Need the device sample code to help customer develop the system

  

  Zirui Su

  TI Thinks Resolved

  Part Number: SN74HCS594-Q1 Hi team My customer is using the chip to achieve LED control I would like to ask that if we have sample codes for them to develop the device? I do not see some example codes in datasheet or E2E forum, so we may need your…

  • over 4 years ago
  • Logic
  • Logic forum

Didn't find what you are looking for? Post a new question.