【选型】国产施密特触发输入小逻辑反相器助力光猫缓启亮灯功能设计，工作电压可达5.5V

时间： 2022-07-13 来源：世强

技术问答

客户在设计某一光猫终端产品时须增加一施密特触发输入小逻辑反相器实现缓启亮灯功能，为此笔者推荐了圣邦微（SGMICRO）推出的SGM7SZ14XC5G/TR，在满足国产化需求的同时具有较好工作电压适配性。

SGM7SZ14XC5G/TR功能框图及典型参数如下：

从上述典型参数列表可知：

1） SGM7SZ14XC5G/TR工作电压上限值高，可达5.5V，可适配常用3.3/5V系统，便于客户物料管控；

2） SGM7SZ14XC5G/TR工作温度范围上限值高，可达125℃，可适配产品的工作环温更高；

3） SGM7SZ14XC5G/TR传输延迟为4.2ns，输出驱动能力可达±24mA(@VCC=3V)，经客户评估可以满足光猫缓启亮灯的应用场景需求；

4） SGM7SZ14XC5G/TR为SC70-5封装，符合SMT自动生产需求。

综上，圣邦微SGM7SZ14XC5G/TR在较好满足光猫缓启亮灯功能要求的同时具有较好工作电压适配性。另，世强硬创平台良好的样品及技术支持可实现客户产品的快速量产服务。

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在光猫产品应用中，客户须选用一半导体放电管TSS用于网口浪涌防护电路设计，要求：双向、断态电压不低于55V、峰值脉冲电压8KV、SMB封装、国产厂牌优先。笔者推荐了硕凯P0640SD，浪涌10/700μS测试可达8KV，抗浪涌能力强。

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某客户在设计一款电信光猫产品时，采用MCU和CPU配合来实现信号处理和逻辑控制，MCU用来处理低速信号，CPU用来处理高速信号，MCU与CPU之间需要一颗逻辑缓冲器来中间做转接。本文结合客户实际应用推荐国产圣邦微（SGMICRO）逻辑单缓冲器SGM7SZ125YC5G/TR。

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光猫的WLAN按键是光猫无线局域网络的开关。某一光猫设备的WLAN按键需要用到侧式轻触开关，开关体积小，使用寿命1万次以上。本文推荐采用键富的轻触开关THDP09-055AB，侧式插件型，按钮直径3.5mm，使用寿命8万次以上。

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SGM7SZ14 Small Logic Inverter with Schmitt Trigger Input

型号- SGM7SZ14XC5G/TR,SGM7SZ14,SGM7SZ14XN5G/TR

数据手册 - SGMICRO - REV. A. 3 - MAY 2022 PDF 英文下载查看更多版本

2021040：SGM7SZ14, SGM7SZ04 Series Datasheet Update

型号- SGM7SZ14XC5G/TR,SGM7SZ04,SGM7SZ14YN5G/TR,SGM7SZ04YC5G/TR,SGM7SZ04YUDL6G/TR,SGM7SZ14,SGM7SZ04XUDL6G/TR,SGM7SZ04YN5G/TR,SGM7SZ14XN5G/TR,SGM7SZ04XC5G/TR,SGM7SZ04XN5G/TR,SGM7SZ14 SERIES,SGM7SZ14YC5G/TR,SGM7SZ04 SERIES

产品变更通知及停产信息 - SGMICRO - 2021/10/18 PDF 英文下载

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对于Buffer的控制，可以通过反相器来进行控制，SGMICRO圣邦微提供的SGM7SZ14XC5G/TR小型逻辑反相器，搭配缓冲器可以实现MCU提供的PWM波形有效对IGBT的控制。

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描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.

型号- SGM11108M,SGM8306-2,SGM8306-1,SGM61450,SGM3733B,SGM11108E,SGM852,SGM853,SGM851,SGM5347-12,SGM2558A,SGM2558B,SGM8261-5,SGM2564,SGM8261-1,SGM5347-10,SGM8261-2,SGM2549,SGM48017C,SGM72110,SGM8094,SGM836,SGM8091,SGM837,SGM61220,SGM8092,SGM8093,SGM835,SGM72108,SGM2553,SGM72106,SGM2555,SGM809B,SGM4519,SGM4517,SGM4518,SGM48010,SGM11106C,SGM63600,SGM41611,SGM4520,SGM4521,SGM48005,SGM8417-4,SGM8417-2,SGM4051C,SGM48000,SGM48001,SGM48002,SGM3843A,SGM61433,SGM621,SGM84782,74HC574,SGM58031,SGM620,SGM862,SGM41600,SGM2572,SGM41603,SGM860,SGM2571,SGM51622H,SGM4995,SGM4511,SGM2574,SGM4996,SGM4512,SGM4510,SGM2575,SGM51622D,SGM4515,SGM8T245S,SGM4516,SGM8250-1,SGM8250-2,SGM4514,SGM3209,SGM809,SGM8557-3,SGM8557-1,SGM8557-2,SGM803,SGM61012,SGM804,SGM802,SGM61013,SGM810,SGM811,SGM61007,SGM61006,SGM4782,SGM7237B,SGM8902,SGM8903,SGM8904,SGM4542,SGM8905,SGM4548,SGM4549,SGM3699,SGM4546,SGM4547,SGM48013C,SGM62110,SGM61020,SGM62112,AAP6153A,SGM61022,SGM62111,SGM800,SGM2596,SGM3200,SGM3206,SGM8270-2,SGM3207,SGM4535,SGM3204,SGM8270-4,SGM8T245,SGM829,SGM61230,SGM42512,SGM41664,SGM825,SGM61232,SGM823,SGM61234,SGM824,SGM891B,SGM42507,SGM42506,SGM40567,SGM4560,SGM42505,SGM4561,SGM6503,SGM4566,SGM8925,SGM6502,SGM8926,SGM6501,SGM4564,SGM8927,SGM5349-16,SGM4565,SGM6505,SGM4568,SGM6504,SGM8909,SGM818,SGM890B,SGM816,SGM42501,SGM40565,SGM42500,SGM814,SGM815,SGM812,SGM40560,SGM40561,SGM821,SGM822,SGM61235,SGM820,SGM4551,SGM4552,SGM4550,SGM4555,SGM4556,SGM4553,SGM4554,SGM51652S8,SGM8910,SGM5347-8,SGM4558,SGM11124E,SGM37863A,SGM11124F,74LVC2T45,SGM893B,SGM4581,SGM8941,SGM4582,SGM4583,SGM48521Q,SGM8704,SGM4588,SGMNQ59430,SGM8705,SGM4589,SGM8706,SGM8707,SGM8942,SGM8701,SGM8702,SGM8703,SGM12213A,SGM11210A,SGM61060,SGM2050C,SGM12UB1D2,SGM892B,SGM8276-4,SGM6510,SGM4573,SGM3001,SGM4574,SGM42513,SGM6514,SGM3005,SGM6513,SGM4578,SGM8276-2,SGM3002,SGM6512,SGM42622B,SGM8276-1,SGM3003,SGM6511,SGM4576,SGM8931,SGMOP17C,SGM8932,SGM8933,SGM6516,SGM12214A,SGM8934,SGM6515,SGM11210M,SGMNE20220,74AVC8T245,SGM3141B,SGM61030,SGM42403Q,SGM42553,SGM61032,SGM61031,74HC165,SGM62116,SGM8953-1,SGM62118,SGM8953-2,SGM62117,SGM8708,SGM8709,SGM4075-2,SGM3140B,SGM61040,SGM4075-1,SGM42544,SGM7300A,SGM7300B,SGM42541,SGM42540,SGM8951,SGM8952,SGM8710,SGM4590,SGM5200,SGM38045,SGM38042,SGM6533,SGM8711,SGM8712,SGM8955,SGM38046,SGM8956,SGM2053S,SGM8199L2,LM2904,SGM8199L1,SGM41002,SGM8968-4,SGM8968-2,LM2902,SGM8968-1,SGM8740,SGM8741,SGM8742,SGM2077A,SGM8743,SGM2077B,SGM8263-1,SGM8748,SGM8263-2,SGM8417-1,SGM8749,SGM12CB1A5,SGM8744,SGM40666B,SGM8745,SGM11104S,SGM40666A,SGM8746,SGM8747,SGM41513D,SGM41513A,SGM42561,SGM42560,SGM8957-1,SGM8957-2,SGM42562,SGM5208-14,SGM5223,SGM48018C,SGM11102F,SGM11102G,SGM41512A,SGM37603A,SGM8521,SGM8522,SGM11102S,SGM33685A,SGM5018,SGM33685B,SGM33685C,SGM8524,SGM8604-1,SGM11103E,SGM8604-5,SGM8193A3,SGM11103F,SGM8604-2,SGM8193A2,SGM48019C,SGM8604-3,SGM8193A1,SGM8193A0,SGM37604A,SGM8751,SGM11103S,SGM41007,SGM41008,SGM6332,SGM8750,FT2830P,SGM11212M,SGM41280,SGM41281,SGM41283,SGM5353-16,SGM37891A,SGM41285,SGM41286,SGM7SZ244S,SGM8542,SGM51652H8,SGM8543,SGM8301,SGM8544,SGM8302,SGM8545,SGM51652H4,SGM8541,SGM8429C-4,SGM8304,SGM8607-2,SGM37892A,SGM13003A,SGM8531,SGM8773,SGM8532,SGM8534,SGM8770,SGM8771,SGM8772,SGM8535,SGM8536,SGM8537,SGM12024A,SGM8538,SGM65230,SGM37893A,SGM65231,SGM65232,SGM8969-2,SGM8969-1,SGM13002A,SGM2035C,SGM7232,SGM9128YP,SGM41291,SGM2036S,74LVC1G32Q,SGM13001C,SGM13001B,74LVC138,SGM2581E,SGM8958-2,SGM41295,SGM13001A,SGM8958-1,SGM7222,SGM6132,SGM8554,SGM7223,SGM8555,SGM7224,SGM6130,SGM8556,SGM2581C,SGM8551,SGM7220,SGM2581A,SGM8552,SGM7226,SGM7227,SGM7228,SGM7229,SGM44599,SGM8581,SGM8713A-1,SGM8582,SGM6613A,SGM8584,SGM832B,SGM41282C,SGM832A,SGM8714B-1,SGM8924A,SGM811C,SGM5355-16,SGM7SZ19,74LVC1G125,SGM48535B,SGM89000,SGM7SZ14,SGM811B,SGM48535A,SGM48752X,SGM431VB,SGM2560A,SGM37603,SGM2560B,SGM6611C,SGM15CB1A4,SGM810B,SGM41280A,SGM8591,SGM8592,SGM48753X,SGM9203,SGM6612A,SGM8594,SGM8922A,SGM4T245,SGM48753,SGM48754,SGM48755,SGM48756,SGM51242R8,SGM48757,SCM40668,SGM813B,SGM48759,74AVC4T245,SGM8140,SGM8141,SGM48751,SGM449,SGM48752,SGMNQ07430,SGMPM21330,SGM48510,SGM458,SGM3785S,SGM37864,SGM61720,SGM459,SGM37863,SGM457,SGM8142,SGM452,SGM450,SGM451,SGM05UB1B3,SGM37862,SGM37861,SGM05CB1A8,SGM05CB1A7,SGM812B,SGM05CB1A4,74GTL2005,SGM25881,SGM447,SGM448,SGM446,SGM7SZ244,SGM8478-1C,SGM51242R4,SGM8139,SGM51242R2,SGM3705,SGM48536,SGM48537,SGM48538,SGM48539,SGM5351-16,SGM2588G,SGM2588E,SGM2588K,SGM3712,SGM3713,SGM2588C,SGM3710,SGM3711,SGM2588A,SGM48522,SGM48523,SGM48525,SGM48526,SGM48760,SGMNQ07440,SGM48520,SGM48521,SGM8557-5,SGM71XX,SGM706B,SGM460,SGM3701,SGM3700,SGM3727,SGM3741B,SGM3725,SGM3726,SGMOP07,SGM898,SGM899,SGM896,SGM897,SGM895,SGM4823,SGM2566B,SGM3735,SGM3732,SGM4822,SGM2566A,SGM3716,SGM3740B,SGM48544,SGM4806,SGM3717,SGM48545,SGM3714,SGM3715,SGM4809,SGM4807,SGM3718,SGM4808,SGM3719,74LVC157,SGM48780,SGM48540,SGM48541,SGM48542,SGM48543,SGM37898,SGM51652H,SGM51652D,SGM3720,SGM37891,SGM4812,SGM37892,SGM4810,SGM37895,SGM3749,SGM3747,SGM3748,SGM72204A,SGMNQ40430,SGM

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型号- SGM51242R8,SGM5353-16,SGM8634C,SGM71612R82Z,SGM71612R81ZXG/TR,SGM51652H8,SGM58200,SGM61720,SGM5209-14,SGM58201,SGM71612R82,SGM51652H4,SGM42403,SGM452,SGM5347-12,SGM51652H4XTS38G/TR,SGM51652HXTS16G-S/TR,SGM58602,SGM71612R82M,SGM2048,SGM58600,SGM71612R81,SGM58601,SGM5347-10,SGM58031Q,SGM42402,SGM42401,SGM8T245XS,SGM71612R81Z,SGM48751X,SGM12UB1D2,SGM51652HX,SGM4029A,SGM6143X,SGM4573,SGM7SZ244,SGM8253,SGM2033,SGM51242R4,74LVC245A,SGM51652H4XTS38G-S/TR,SGMXXXXX,SGM51242R2,SGM58600XTRL20G/TR,SGM5351-16,SGM61030,SGM51622S8XLFH64G/TR,SGM4875XX,SGM58600XSS20G/TR,SGM25701,SGM8270,SGM51610S,SGM58601XSS28G/TR,SGM2050,SGM58031,SGM5200,SGM862,SGM71612R8XX,SGM6130X,SGM2054,SGM860,SGM8277,SGM,SGM51622H,SGM204X,SGM2059,SGM51622D,SGM51610C,SGM89XB,SGM5202-14,74AHC14,SGM61410,SGM5353,SGM51613HXTS16G/TR,SGM71612R8,SGM51652HBXTS38G-S/TR,74AHC08,SGM61411,SGM5208-14,SGM8610,SGM51652H,SGM58601XTQK28GITR,SGM71612R81ZXTSG16G/TR,SGM51652D,SGM5348-10,SGM51652S8XLFH64G/TR,SGM5348-8,SGM5348-12,SGM5349,SGM5355-16,GRM2030,SGM51613HXTQE16G/TR,SGM823,SGM61630,SGM71612R81ZXTS16G/TR,SGM51613H,SGM51622S8,SGM5349-16,SGM8249,SGM51613D,SGM8255B,SGM5860X,SGM5352-16,SGM05FB4D2,SGM4027A,SGM51652H8XTS38G/TR,SGM4551,SGM05FB8D2,SGM5200Q,SGM51652S8,SGM5347-8,SGM80XB

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