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Testing CD74HC354 Multiplexer by the Teradyne J750 Tester

时间:2009-11-05 10:55来源:www.ictest8.com 作者:ictest8 点击:

  本文图文并茂的解说了使用Teradyne的J750测试机,开发一款数字IC--CD74HC354的详细过程,相信对大家的J750学习非常有帮助!

Step 1: Creating the Channel Map

Before the DUT can be tested, each pin on the DUT needs to be specifically map to a channel at the Teradyne J750 tester. There are 64 digital channels and 5 power supply channels. Therefore, this tester supports chip that has up to 64 digital input and output and digital chips with multiple different supply voltage.

1.The Daughter board used in this test is DJ7MDIPDS. Since this is a pre-wired daughter board, you can just attached the chip switch on the board and put your chips on the switch

2.You can find out which channel connected to the pin by looking at taking a look on the board directly.

Step 2: Turning on the Teradyne J750

The Teradyne J750 tester is a very sensitive tester. Any electrostatic charge present on your body will destroy the tester if no extra precaution taken into consideration. Therefore ESD band is required to wear at all time of using the tester. The tester is also calibrated at 30 degrees Celsius. However, the tester is still able to function within ± 3oC of the calibrated temperature. Therefore, make sure that the temperature of the room is within 27 oC and 33 oC.

1.Press the Green Button to turn on the power supply.

Step 3: Starting the IG-XL Program

The IG-XL program is the interface program between the Teradyne J750 tester and the user. This is the program where the user will enter all the various characteristics, specifications and the test pattern of the chip.

1.Log onto the computer using your Engineering Account.

2.Click [Start] button.

3.Point to Programs.

4.Choose Teradyne IG-XL V3.40.07

5.Click [New Test Program].

………………

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Step 14: Running the Test Program

Several basic steps needed to be taken to run the test program that you have just created.

First, click on the 5th button from the left on the IG-XL toolbar. This is the validate button that will check your program for any errors. If an error occurs, an Error sheet will appear. Fix the errors before continuing to the next step.

具体请下载参考 
Testing CD74HC354 Multiplexer by Using the Teradyne J750 Tester

作者:derek sun 整理
2009/11/05

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