Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Tue, 31 Mar 2020 14:05:45 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 02VKvPpZ031056; Tue, 31 Mar 2020 16:57:33 -0400 Received: from outgoing-exchange-1.mit.edu (OUTGOING-EXCHANGE-1.MIT.EDU [18.9.28.15]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 02VKvOZX031042 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 31 Mar 2020 16:57:24 -0400 Received: from w92exedge3.exchange.mit.edu (W92EXEDGE3.EXCHANGE.MIT.EDU [18.7.73.15]) by outgoing-exchange-1.mit.edu (8.14.7/8.12.4) with ESMTP id 02VKvI1C005280 for ; Tue, 31 Mar 2020 16:57:20 -0400 Received: from oc11expo12.exchange.mit.edu (18.9.4.17) by w92exedge3.exchange.mit.edu (18.7.73.15) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Tue, 31 Mar 2020 16:56:48 -0400 Received: from oc11exhyb5.exchange.mit.edu (18.9.1.110) by oc11expo12.exchange.mit.edu (18.9.4.17) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Tue, 31 Mar 2020 16:57:23 -0400 Received: from NAM12-DM6-obe.outbound.protection.outlook.com (104.47.59.177) by oc11exhyb5.exchange.mit.edu (18.9.1.110) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Tue, 31 Mar 2020 16:57:23 -0400 Received: from MW2PR16CA0036.namprd16.prod.outlook.com (2603:10b6:907::49) by BL0PR01MB4564.prod.exchangelabs.com (2603:10b6:208:8f::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2856.20; Tue, 31 Mar 2020 20:57:21 +0000 Received: from CO1NAM03FT014.eop-NAM03.prod.protection.outlook.com (2603:10b6:907:0:cafe::b7) by MW2PR16CA0036.outlook.office365.com (2603:10b6:907::49) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2856.19 via Frontend Transport; Tue, 31 Mar 2020 20:57:21 +0000 Received: from mail-yb1-f172.google.com (209.85.219.172) by CO1NAM03FT014.mail.protection.outlook.com (10.152.80.101) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2856.17 via Frontend Transport; Tue, 31 Mar 2020 20:57:21 +0000 Received: by mail-yb1-f172.google.com with SMTP id f14so6082820ybr.13 for ; Tue, 31 Mar 2020 13:57:21 -0700 (PDT) From: Manu Abraham To: Microcontroller discussion list - Public. Sender: "piclist-bounces@mit.edu" Date: Tue, 31 Mar 2020 13:57:10 -0700 Subject: Re: [EE] Identifying pin one Thread-Topic: [EE] Identifying pin one Thread-Index: AdYHoCVpvF9o62wXThe7O27dxrgI7Q== Message-ID: References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: 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: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.219.172 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.219.172; helo=mail-yb1-f172.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=az4eLY3t4jiKs931VRIYafljSKa83Ed9LClobYmz2dM=; b=b9MKM8BCuTxnf8y2Iryxj40eXTmmR4uLWXAb1GTW0YKjA/awNoz/BBb7CwMUhQb7hV n5mOwQ54Q6j5f8+fkmqbOascx8FCsrBwGbA9eOsylG/hyXk7HreYHzsSKpu/vqeeRHdB cia+KP4g1nMOJYH8bc4e1JUtIL1TI9hQ9NhT6xmHJ+tNFosVkT9vI/cNo2xRju6Mxx2W BWHeGfrCzCdmVExD4sz8alvWL+SRS7oj/jEGq2/AS+YMoqjVuEeC+2bZH1PWS+Pnmd6N WTbZIaD5WfEQhEFTXVsdEiVwIl9O6AQtSEdkh5b4nOSlXwKfgPTeIU+FI4RuD07Re3eD 7UvA== authentication-results: spf=pass (sender IP is 209.85.219.172) 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:a5b:ed2:: with SMTP id a18mr30819253ybs.520.1585688240124; Tue, 31 Mar 2020 13:57:20 -0700 (PDT) x-topics: [EE] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 On Tue, Mar 31, 2020 at 9:14 PM David C Brown wrote: > > I have purchases some > SN74LVC2G14DBVr chips in SOT23-6 packages and, with great difficulty, > mounted one of them on a DIP adaptor > > But I am not sure which is pin 1 and the datasheet is unhelpful. > The chips bear the word C145 and my guess is that if that is the right wa= y > up > pin 1 is the lower left. Can anyone confirm this? Datasheet : http://www.ti.com/lit/ds/symlink/sn74lvc2g14.pdf Page 17 describes the package where Pin#1 is. There's also a footnote: "Leads 1,2,3 may be wider than leads 4,5,6 for package orientation" Manu --=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 .