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 09:13:47 -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 02VG4TKh032333; Tue, 31 Mar 2020 12:04:38 -0400 Received: from outgoing-exchange-3.mit.edu (OUTGOING-EXCHANGE-3.MIT.EDU [18.9.28.13]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 02VG4RcS032300 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 31 Mar 2020 12:04:27 -0400 Received: from oc11exedge2.exchange.mit.edu (OC11EXEDGE2.EXCHANGE.MIT.EDU [18.9.3.18]) by outgoing-exchange-3.mit.edu (8.14.7/8.12.4) with ESMTP id 02VG4gY3009928 for ; Tue, 31 Mar 2020 12:04:43 -0400 Received: from w92expo20.exchange.mit.edu (18.7.74.74) by oc11exedge2.exchange.mit.edu (18.9.3.18) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Tue, 31 Mar 2020 12:03:41 -0400 Received: from oc11exhyb6.exchange.mit.edu (18.9.1.111) by w92expo20.exchange.mit.edu (18.7.74.74) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Tue, 31 Mar 2020 12:04:00 -0400 Received: from NAM02-BL2-obe.outbound.protection.outlook.com (104.47.38.53) by oc11exhyb6.exchange.mit.edu (18.9.1.111) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Tue, 31 Mar 2020 12:04:00 -0400 Received: from MWHPR03CA0013.namprd03.prod.outlook.com (2603:10b6:300:117::23) by BL0PR01MB4180.prod.exchangelabs.com (2603:10b6:208:44::25) 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 16:03:58 +0000 Received: from CO1NAM03FT050.eop-NAM03.prod.protection.outlook.com (2603:10b6:300:117:cafe::e1) by MWHPR03CA0013.outlook.office365.com (2603:10b6:300:117::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2856.20 via Frontend Transport; Tue, 31 Mar 2020 16:03:58 +0000 Received: from cedar.nocdirect.com (69.73.180.175) by CO1NAM03FT050.mail.protection.outlook.com (10.152.81.76) 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 16:03:57 +0000 Received: from 25.16.187.81.in-addr.arpa ([81.187.16.25]:36476 helo=[10.0.0.28]) by cedar.nocdirect.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.93) (envelope-from ) id 1jJJMq-0001k4-Ft for piclist@mit.edu; Tue, 31 Mar 2020 12:03:56 -0400 From: John Lawton To: "piclist@mit.edu" Sender: "piclist-bounces@mit.edu" Date: Tue, 31 Mar 2020 09:03:54 -0700 Subject: Re: [EE] Identifying pin one Thread-Topic: [EE] Identifying pin one Thread-Index: AdYHd1xuDt39EVJZSzuJ8dkjEsL+3Q== Message-ID: <00f89b3c-990c-5442-1411-c9b0683c14e3@jle.co.uk> References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US Content-Language: en-GB 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: None (protection.outlook.com: jle.co.uk does not designate permitted sender hosts) dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mitprod.onmicrosoft.com; s=selector2-mitprod-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=LjCki2QF8NtqSW0CTNxXsvUGkkGTfsPEiV8PVGF1WNQ=; b=edGDtwgxRpDKkL/e+pkpOlezUCB/W9bDjGHlOCMb0e7Sj7fo59f+I8MUgRaPYQZ8GP2c+KYOxKh91NkunA9DcAQkibjmkp5JXOrY6cnrSKJAbxF6meMAjMDem1bjUB1U/Vb8kBWNKlz5vb3DZfpCRHA99TrcKt9ngs177PX2NCc= authentication-results: spf=none (sender IP is 69.73.180.175) smtp.mailfrom=jle.co.uk; mit.edu; dkim=none (message not signed) header.d=none;mit.edu; dmarc=none action=none header.from=jle.co.uk; user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 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-source-args: x-source-dir: x-antiabuse: Sender Address Domain - jle.co.uk x-source: x-authenticated-sender: cedar.nocdirect.com: piclist@jle.co.uk x-topics: [EE] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 You could run up power to the device (with a current limit) and check=20 for reverse conduction? John On 31/03/2020 16:51, Clint Jay wrote: > I would take that as correct, yes. > > On Tue, 31 Mar 2020, 16:44 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 w= ay >> up >> pin 1 is the lower left. Can anyone confirm this? >> __________________________________________ >> David C Brown >> 43 Bings Road >> Whaley Bridge >> High Peak Phone: 01663 733236 >> Derbyshire eMail: dcb.home@gmail.com >> SK23 7ND web: www.bings-knowle.co.uk/dcb >> >> >> >> >> *Sent from my etch-a-sketch* >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> --=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 .