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Sender: "piclist-bounces@mit.edu" Date: Wed, 26 Feb 2020 11:04:55 -0800 Subject: [EE] 74LVC1G332 input clamping current only specified for VI < 0 V Thread-Topic: [EE] 74LVC1G332 input clamping current only specified for VI < 0 V Thread-Index: AdXs2VohlcnC/3ArQ3qEhTDVb2z+Fw== Message-ID: List-Help: List-Subscribe: , List-Unsubscribe: , Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: TempError X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.167.172 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.167.172; helo=mail-oi1-f172.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=jvT3Ng2ovgUghdvqaXcc3sIkWr3H4w9hfeIiRpSeBx4=; b=GqGEaDQuN6u7QVJl/UWhDjoIIRDuc4HnzRjBaTCrWkYtdCTI0nQTlWNsUWwSqCO+6u g0aHM8nT74BBY/0lW7XWN5eu2ZXA+W3GHUSmtWNhzgZdN8gdG7IUroGhy0xRw8xS3vet v1loDFLXqluHwxpCNDCuyvEFjqnBpeeCE6h+rYY1+BRTajq/ZKLOt4WgGZGurFQR/K7f U4AeMrmnIy4/fT9sQqBOESkWfb20Um7/zAvFjaJHehACvsqP0sbLK/MUANcfbQKXwHJt 96KP6C/t23UZQ8ueFe42OWiWlk60qHHRKEZoXVX9OdH1rMd8wNjqbVdI38svrZejmiKq eH+A== authentication-results: spf=pass (sender IP is 209.85.167.172) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com;mit.edu; dmarc=pass action=none header.from=gmail.com;compauth=pass reason=100 errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-received: by 2002:aca:3017:: with SMTP id w23mr380478oiw.152.1582743931567; Wed, 26 Feb 2020 11:05:31 -0800 (PST) x-topics: [EE] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Hello, I am considering subjecting the input of a 74LVC1G332 to 12 to 48V though a resistor and relying upon the internal clamping diodes. Problem is, this device only specifies clamping diode current for VI < 0 V (and not for VI > VCC). However, it does specify that it passes various EMI certifications. I know I could use an Zener diode, but I am curious: what is going on here with the datasheet specification? --=20 Jason White --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .