Texas Instruments 74LS05 Buffers & Line Drivers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments . As you pointed out, the 74LS05 has “open-collector” outputs and the 74LS04 does not. There are two general types of outputs in digital. SN54/74LS HEX INVERTER. LOW POWER SCHOTTKY. J SUFFIX. CERAMIC . CASE N SUFFIX. PLASTIC. CASE 1. 1. ORDERING.
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The line into the microcontroller 74ls5 to a logic 0 will be recognized as an interrupt — since this is caused by the line going from high to low, this is called an “active low” signal.
What good is that? Plus, it appears the 05 is more expensive? Post as a guest Name. Sign up using Email and Password. One example is several devices with interrupt outputs feeding into a single interrupt pin on a microcontroller. They drive the output to ground to reflect a logic 0 this is called “sinking”.
As you pointed out, the 74LS05 has “open-collector” outputs and the 74LS04 74ls50 not.
One other way to look at it: Sign up or log in Sign up using Google. Excellent explanation for how OC works.
74LS05 – Hex Inverter Open Coll
If I recall correctly, at least some open collector outputs can accept higher voltages than 5. What’s the difference between a 74LS05 hex inverter and a 74LS04 hex inverter?
Regular push-pull outputs are used when only one output is driving one or more inputs, which is the case most of the time.
How, if no output is driving it high? KevinKeane Good point – I’ll add that 744ls05 my answer. Can someone tell me the difference between the two and when would you use one vs. Sign up using Facebook. Since the pull-up resistor is a fairly high value, this will not draw very much current, about 1 mA for a 4. It looks like the 74LS05 has “open collector outputs” not 7ls05 what that is and the 04 does not.
You can use them to turn a 12V light on and off by connecting the light between 12V and the output.
74LS05 Datasheet(PDF) – Texas Instruments
Home Questions Tags Users Unanswered. Somewhere there will be a “pull-up resistor” common values are 4.
But this way you don’t need to actually include the physical gate.