The SGA is a high performance SiGe HBT. MMIC Amplifier. NOTE: The recommended operating current in the preliminary datasheet was mA. MOSFET are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for MOSFET. Datasheet, In Stock. SN datasheet, SN circuit, SN data sheet: TI – BIT RANDOM- ACCESS READ/WRITE MEMORY,alldatasheet, datasheet, Datasheet search site.

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WE lo then all outputs should be high, as they should be if you take! After playing around for some time with the IC, dtasheet got really hot and I am afraid that I ruined the chip.

We Lo, the truth table on the data sheet says that if both are low the state when you have the switch closedall data outputs will be Hi.

(PDF) 7489 Datasheet download

Have I understood this correctly? That is what I was thinking. I need to check the sink current for this IC. Sign up or log in Sign up using Google. Without the switch closed, the LED D1 is on. Note that the LED current is limited to less than 2 mA, minimizing excess dissipation in the chip.

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policydatashdet our Terms of Service. This is a follow up question to this question. I don’t seem to be able to get it to work. To comment, click on the “add a comment” link by the answer or question your commenting to.

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ME high regardless of the!

Dtasheet Questions Tags Users Unanswered. I would hook the up as follows:. Lower current gives less light, but for indicator light use I find tha 10 mA is more than enough, so I’d use Ohms or more. Your only using address ‘0’ A0 – A3 are lowso toggling the ME pin has no effect. This IC can sink 12mA max per output pin. Sign up using Facebook.

At present only D2 should be on. Home Questions Tags Users Unanswered. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

7489 Datasheet

Why are two LEDs on? Sign up using Email and Password.

Use the ‘ ‘ symbol to find names in a long list of comments so that person gets the comment sent to them. Does this mean that I am doing something datasheef, or have I broken the chip?

I have also tried inserting pull up resistors 1kOhm to 4. Thanks for the answer. A shunt resistor in datasheett with the LED will ensure lights-off, and may improve the high-side logic margin because of the up-to-2V offset from the LED.

Schematics for using IC memory – Electrical Engineering Stack Exchange

I have some jumper cables to control the input pins 4, 6, 10, 12 and I have been connecting them to either ground or 5V directly. For high-speed signals, a lower value may be required to ensure that the signal changes fast enough when the signal should go high.

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Email Required, but never shown. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you datassheet read our updated terms of serviceprivacy policy and cookie policyand dtasheet your continued use of the website is subject to these policies. The SIP network is nice because you can plug it into your breadboard right next to the DIP switch, eliminating a lot of wires.

So now I have the following schematics more or less copied from here. I still can’t get it to work, but I will accept your answer because datazheet provide a general schematics for the chip.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Any value of input pullup resistor greater than ohms will suit for LOW input normal function. This question has already been answered in some detail.

ME high should leave outputs high. Low impedance also protects against accidental signal pickup stray capacitance, static discharge. Sign up using Facebook. At ohm’s the LED current is only 6mA. R4 should be ON.