类别是'逻辑 - FIFO 存储器'
逻辑 - FIFO 存储器 (6000)
图片 | 产品型号 | 品牌 | 数据表 | 有效性 | 单价(CNY) | 询价 | 认证 | 工厂交货时间 | 触点镀层 | 底架 | 包装/外壳 | 引脚数 | 质量 | 包装 | 已出版 | JESD-609代码 | 无铅代码 | 零件状态 | 湿度敏感性等级(MSL) | 终止次数 | ECCN 代码 | 端子表面处理 | 最高工作温度 | 最小工作温度 | 附加功能 | HTS代码 | 端子位置 | 终端形式 | 峰值回流焊温度（摄氏度） | 功能数量 | 电源电压 | 端子间距 | Reach合规守则 | 频率 | 时间@峰值回流温度-最大值(s) | 引脚数量 | 资历状况 | 工作电源电压 | 电源 | 温度等级 | 电路数量 | 最大电源电压 | 最小电源电压 | 内存大小 | 元素配置 | 电源电流 | 最大电源电流 | 时钟频率 | 访问时间 | 数据总线宽度 | 方向 | 组织结构 | 内存宽度 | 密度 | 待机电流-最大值 | 记忆密度 | 并行/串行 | 同步/异步 | 字长 | 内存IC类型 | 总线定向 | 重传能力 | FWFT支持 | 可编程标志支持 | 输出启用 | 周期 | 座位高度(最大) | 长度 | 宽度 | 器件厚度 | 辐射硬化 | RoHS状态 | 无铅 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 723646L15PF | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 128 | 66.7MHz | 2009 | e0 | no | 活跃 | 3 (168 Hours) | 128 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | MAILBOX | 8542.32.00.71 | QUAD | 鸥翼 | 225 | 1 | 5V | 0.5mm | 66.7MHz | 128 | 5V | 5V | COMMERCIAL | 5.5V | 4.5V | 400mA | 400mA | 10 ns | 1KX36 | 72 kb | PARALLEL | Synchronous | 36b | BI-DIRECTIONAL FIFO | Triple-Bus | 无 | 有 | YES | 15 ns | 1.6mm | 20mm | 14mm | 1.4mm | 符合RoHS标准 | 含铅 | |||||||||||||||||
 | 72245LB25TFI8 | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | LQFP | 64 | 40MHz | Tape & Reel | 2009 | e0 | no | 活跃 | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 85°C | -40°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 5V | 0.5mm | 40MHz | 20 | 64 | 5V | 5V | INDUSTRIAL | 5.5V | 4.5V | Dual | 60mA | 60mA | 15 ns | 4KX18 | 72 kb | 0.005A | PARALLEL | Synchronous | 18b | 其他先进先出 | 单向 | 无 | 有 | YES | 25 ns | 1.6mm | 10mm | 10mm | 1.4mm | 符合RoHS标准 | 含铅 | ||||||||||||||
.png) | 72V3650L7-5BB8 | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | BGA | 144 | 133.3MHz | Tape & Reel | 2008 | 活跃 | 70°C | 0°C | 133.3MHz | 3.3V | 3.45V | 3.15V | Dual | 40mA | 40mA | 5 ns | 单向 | 72 kb | Synchronous | 36b | 单向 | 有 | 有 | 有 | 13mm | 13mm | 1.76mm | 符合RoHS标准 | 含铅 | ||||||||||||||||||||||||||||||||||||
 | 72221L15JI8 | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | PLCC | 32 | 66.7MHz | Tape & Reel | 2008 | e0 | no | 活跃 | 1 (Unlimited) | 32 | EAR99 | Tin/Lead (Sn85Pb15) | 85°C | -40°C | QUAD | J BEND | 225 | 1 | 5V | 1.27mm | 66.7MHz | 32 | 5V | 5V | INDUSTRIAL | 5.5V | 4.5V | Dual | 35mA | 35mA | 10 ns | 1KX9 | 9 kb | 0.005A | PARALLEL | Synchronous | 9b | 其他先进先出 | 单向 | 无 | 有 | YES | 15 ns | 3.556mm | 13.97mm | 11.43mm | 2.79mm | 符合RoHS标准 | 含铅 | ||||||||||||||||
 | 72V84L15PA | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TSSOP | 56 | 2009 | e0 | no | 活跃 | 1 (Unlimited) | 56 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | RETRANSMIT | 8542.32.00.71 | 鸥翼 | 240 | 1 | 3.3V | 0.5mm | 20 | 56 | 3.3V | COMMERCIAL | 3.6V | 3V | Dual | 100mA | 100mA | 40MHz | 15 ns | 双向 | 4KX9 | 72 kb | 0.005A | PARALLEL | Asynchronous | 9b | 其他先进先出 | 单向 | 有 | 无 | YES | 25 ns | 1.2mm | 14mm | 6.1mm | 1mm | 符合RoHS标准 | 含铅 | ||||||||||||||||
 | 72225LB15J | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | PLCC | 68 | 66.7MHz | 2000 | e0 | no | 活跃 | 1 (Unlimited) | 68 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | J BEND | 225 | 1 | 5V | 1.27mm | 66.7MHz | 68 | 5V | 5V | COMMERCIAL | 5.5V | 4.5V | Dual | 60mA | 60mA | 10 ns | 1KX18 | 18 kb | 0.005A | PARALLEL | Synchronous | 18b | 其他先进先出 | 单向 | 无 | 有 | YES | 15 ns | 4.572mm | 24mm | 24mm | 3.63mm | 符合RoHS标准 | 含铅 | ||||||||||||||||
 | 72235LB10TF8 | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | LQFP | 64 | 100MHz | 2000 | e0 | no | 活跃 | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 5V | 0.5mm | 100MHz | 20 | 64 | 5V | 5V | COMMERCIAL | 5.5V | 4.5V | Dual | 60mA | 60mA | 6.5 ns | 2KX18 | 36 kb | 0.005A | PARALLEL | Synchronous | 18b | 其他先进先出 | 单向 | 无 | 有 | YES | 10 ns | 1.6mm | 10mm | 10mm | 1.4mm | 符合RoHS标准 | 含铅 | |||||||||||||||
 | 72825LB25PF | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 128 | 40MHz | 2003 | e0 | no | 活跃 | 3 (168 Hours) | 128 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | 鸥翼 | 225 | 1 | 5V | 0.5mm | 40MHz | 128 | 5V | 5V | COMMERCIAL | 5.5V | 4.5V | 100mA | 100mA | 15 ns | 1KX18 | 36 kb | 0.01A | PARALLEL | Synchronous | 18b | 其他先进先出 | 双向 | 无 | 有 | YES | 25 ns | 1.6mm | 20mm | 14mm | 1.4mm | 符合RoHS标准 | 含铅 | |||||||||||||||||
 | 72825LB25PF8 | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 128 | 40MHz | 2009 | e0 | no | 活跃 | 3 (168 Hours) | 128 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | 鸥翼 | 225 | 1 | 5V | 0.5mm | 40MHz | 128 | 5V | 5V | COMMERCIAL | 5.5V | 4.5V | 100mA | 100mA | 15 ns | 1KX18 | 36 kb | 0.01A | PARALLEL | Synchronous | 18b | 其他先进先出 | 双向 | 无 | 有 | YES | 25 ns | 1.6mm | 20mm | 14mm | 1.4mm | 符合RoHS标准 | 含铅 | |||||||||||||||||
 | 72V263L15PF | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 80 | 66.7MHz | 2003 | e0 | no | 活跃 | 3 (168 Hours) | 80 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 3.3V | 0.65mm | 66.7MHz | 20 | 80 | 3.3V | COMMERCIAL | 3.45V | 3.15V | Dual | 35mA | 10 ns | 8KX18 | 144 kb | 0.015A | PARALLEL | Synchronous | 其他先进先出 | 单向 | 有 | YES | 15 ns | 1.6mm | 14mm | 14mm | 1.4mm | 无 | 符合RoHS标准 | 含铅 | ||||||||||||||||||
 | 72V851L10PF8 | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 64 | 100MHz | 2008 | e0 | no | 活跃 | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 3.3V | 0.8mm | 100MHz | 20 | 64 | 3.3V | COMMERCIAL | 3.6V | 3V | 40mA | 40mA | 6.5 ns | 8KX9 | 144 kb | PARALLEL | Synchronous | 9b | 其他先进先出 | 双向 | 无 | 有 | YES | 10 ns | 1.6mm | 14mm | 14mm | 1.4mm | 符合RoHS标准 | 含铅 | ||||||||||||||||||
 | 72T3645L4-4BB | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | Lead, Tin | 表面贴装 | BGA | 208 | 830.300833mg | 225MHz | 2009 | e0 | no | Discontinued | 3 (168 Hours) | 208 | EAR99 | Tin/Lead (Sn63Pb37) | 70°C | 0°C | 8542.32.00.71 | BOTTOM | BALL | 225 | 1 | 2.5V | 1mm | 20 | 208 | 不合格 | 2.5V | COMMERCIAL | 2.625V | 2.375V | Dual | 70mA | 70mA | 3.4 ns | 1KX36 | 36 kb | 0.01A | PARALLEL | Asynchronous | 36b | 其他先进先出 | 单向 | 有 | YES | 4.4 ns | 1.97mm | 17mm | 17mm | 1.76mm | 符合RoHS标准 | 含铅 | |||||||||||||||||
 | 72255LA15PF | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 64 | 66.7MHz | 2001 | e0 | no | 活跃 | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | RETRANSMIT; AUTO POWER DOWN; EASY EXPANDABLE IN DEPTH AND WIDTH | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 5V | 0.8mm | 66.7MHz | 20 | 64 | 不合格 | 5V | 5V | COMMERCIAL | 5.5V | 4V | Dual | 80mA | 80mA | 10 ns | 8KX18 | 144 kb | 0.017A | PARALLEL | Synchronous | 18b | 其他先进先出 | 单向 | 有 | YES | 15 ns | 1.6mm | 14mm | 14mm | 1.4mm | 符合RoHS标准 | 含铅 | ||||||||||||||
 | 72V851L10TF | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | Lead, Tin | 表面贴装 | TQFP | 64 | 100MHz | 2008 | e0 | no | Discontinued | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 3.3V | 0.5mm | 100MHz | 20 | 64 | 3.3V | COMMERCIAL | 3.6V | 3V | 40mA | 40mA | 6.5 ns | 8KX9 | 144 kb | PARALLEL | Synchronous | 9b | 其他先进先出 | 双向 | 无 | 有 | YES | 10 ns | 1.6mm | 10mm | 10mm | 1.4mm | 符合RoHS标准 | 含铅 | |||||||||||||||||||
 | 72265LA15TFI | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 64 | 66.7MHz | 2001 | e0 | no | 活跃 | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 85°C | -40°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 5V | 0.5mm | 66.7MHz | 20 | 64 | 不合格 | 5V | 5V | INDUSTRIAL | 5.5V | 4V | Dual | 80mA | 80mA | 10 ns | 16KX18 | 288 kb | 0.02A | PARALLEL | Synchronous | 18b | 其他先进先出 | 单向 | 有 | YES | 15 ns | 1.6mm | 10mm | 10mm | 1.4mm | 符合RoHS标准 | 含铅 | |||||||||||||||
 | 7207L25PI | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 通孔 | PDIP | 28 | Bulk | 2005 | e0 | no | 活跃 | 1 (Unlimited) | 28 | EAR99 | Tin/Lead (Sn85Pb15) | 85°C | -40°C | RETRANSMIT | 8542.32.00.71 | 245 | 1 | 5V | 2.54mm | 28 | 5V | 5V | INDUSTRIAL | 5.5V | 4.5V | Dual | 120mA | 120mA | 25 ns | 32KX9 | 288 kb | 0.008A | PARALLEL | Asynchronous | 9b | 其他先进先出 | 单向 | 有 | 无 | NO | 35 ns | 4.699mm | 36.6mm | 15.24mm | 3.8mm | 符合RoHS标准 | 含铅 | ||||||||||||||||||
 | 72V851L15PF | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 64 | 66.7MHz | 2005 | e0 | no | 活跃 | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 3.3V | 0.8mm | 66.7MHz | 20 | 64 | 3.3V | COMMERCIAL | 3.6V | 3V | 40mA | 40mA | 10 ns | 8KX9 | 144 kb | PARALLEL | Synchronous | 9b | 其他先进先出 | 双向 | 无 | 有 | YES | 15 ns | 1.6mm | 14mm | 14mm | 1.4mm | Non-RoHS Compliant | 含铅 | ||||||||||||||||||
 | 72V253L7-5PF | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 80 | 133.3MHz | Bulk | 2009 | e0 | no | 活跃 | 3 (168 Hours) | 80 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 3.3V | 0.65mm | 133.3MHz | 20 | 80 | 不合格 | 3.3V | COMMERCIAL | 3.45V | 3.15V | Dual | 35mA | 5 ns | 4KX18 | 72 kb | 0.015A | PARALLEL | Synchronous | 其他先进先出 | 单向 | 有 | YES | 1.6mm | 14mm | 14mm | 1.4mm | 符合RoHS标准 | 含铅 | ||||||||||||||||||
 | 72V215L15PFI | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | TQFP | 64 | 66.7MHz | 2009 | e0 | no | 活跃 | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 85°C | -40°C | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 3.3V | 0.8mm | 66.7MHz | 20 | 64 | 3.3V | INDUSTRIAL | 3.6V | 3V | Dual | 30mA | 30mA | 10 ns | 512X18 | 9 kb | 0.005A | PARALLEL | Synchronous | 18b | 其他先进先出 | 单向 | 无 | 有 | YES | 15 ns | 1.6mm | 14mm | 14mm | 1.4mm | 符合RoHS标准 | 含铅 | ||||||||||||||||
 | 723651L15PF | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 表面贴装 | TQFP | 120 | 66.7MHz | 2009 | e0 | no | Discontinued | 4 (72 Hours) | 120 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | MAIL BOX; RETRANSMIT | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 5V | 0.4mm | 66.7MHz | 20 | 120 | 5V | 5V | COMMERCIAL | 5.5V | 4.5V | Dual | 400μA | 400μA | 11 ns | 36b | 2KX36 | 72 kb | PARALLEL | Synchronous | 36b | 其他先进先出 | 双向 | 有 | YES | 15 ns | 1.6mm | 14mm | 14mm | 1.4mm | 无 | Non-RoHS Compliant | 含铅 | ||||||||||||||||
| 72V3642L10PFG | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Tin | 表面贴装 | LQFP | 120 | 100MHz | Bulk | 2013 | e3 | yes | 活跃 | 3 (168 Hours) | 120 | EAR99 | 70°C | 0°C | 信箱旁路登记 | QUAD | 鸥翼 | 260 | 1 | 3.3V | 0.4mm | 30 | 120 | 3.3V | COMMERCIAL | 1 | 3.6V | 3V | 128B | Dual | 400mA | 6.5 ns | 2b | 0.005A | 36864 bit | PARALLEL | BI-DIRECTIONAL FIFO | 双向 | 无 | 有 | YES | 14mm | 14mm | 1.4mm | 符合RoHS标准 | 无铅 | ||||||||||||||||||||
 | IDT72T40108L4BB | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 表面贴装 | BGA | 208 | 2009 | e0 | 3 (168 Hours) | 208 | EAR99 | Tin/Lead (Sn63Pb37) | 70°C | 0°C | ALTERNATIVE MEMORY WIDTH: 10 AND 20 | 8542.32.00.71 | BOTTOM | BALL | 225 | 1 | 2.5V | 1mm | not_compliant | 250MHz | 30 | 208 | 不合格 | 2.5V | COMMERCIAL | 2.625V | 2.375V | Dual | 60mA | 4 ns | 单向 | 64KX40 | 40 | 2.5 Mb | 0.05A | PARALLEL | Synchronous | 40b | 其他先进先出 | YES | 1.97mm | 17mm | 17mm | Non-RoHS Compliant | |||||||||||||||||||||||
 | 72V271LA10TF8 | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | LQFP | 64 | 100MHz | 2009 | e0 | no | 活跃 | 3 (168 Hours) | 64 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | RETRANSMIT; AUTO POWER DOWN | 8542.32.00.71 | QUAD | 鸥翼 | 240 | 1 | 3.3V | 0.5mm | 100MHz | 20 | 64 | 不合格 | 3.3V | COMMERCIAL | 3.6V | 3V | Dual | 55mA | 55mA | 6.5 ns | 32KX9 | 288 kb | 0.015A | PARALLEL | Synchronous | 9b | 其他先进先出 | 单向 | 有 | YES | 10 ns | 1.6mm | 10mm | 10mm | 1.4mm | 符合RoHS标准 | 含铅 | |||||||||||||||
 | 7201LA25JI8 | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | 7 Weeks | Lead, Tin | 表面贴装 | PLCC | 32 | 2005 | e0 | no | 活跃 | 1 (Unlimited) | 32 | EAR99 | Tin/Lead (Sn85Pb15) | 85°C | -40°C | RETRANSMIT | QUAD | J BEND | 225 | 1 | 5V | 1.27mm | 20 | 32 | 5V | 5V | INDUSTRIAL | 5.5V | 4.5V | Dual | 80mA | 80mA | 28.5MHz | 25 ns | 512X9 | 4.5 kb | 0.0005A | PARALLEL | Asynchronous | 9b | 其他先进先出 | 单向 | 有 | 无 | NO | 35 ns | 3.55mm | 13.97mm | 11.43mm | 2.79mm | 符合RoHS标准 | 含铅 | ||||||||||||||||
 | 72401L35SO | Integrated Device Technology (IDT) | 数据表 | N/A | - | 最小起订量: 1 倍率: 1 | Lead, Tin | 表面贴装 | SOIC | 16 | 2009 | e0 | no | Discontinued | 1 (Unlimited) | 16 | EAR99 | Tin/Lead (Sn85Pb15) | 70°C | 0°C | FALL THRU 34NS | 8542.32.00.71 | 鸥翼 | 225 | 1 | 5V | 1.27mm | 16 | 5V | 5V | COMMERCIAL | 5.5V | 4.5V | Dual | 35mA | 35mA | 35MHz | 20 ns | 64X4 | 256 b | PARALLEL | Asynchronous | 4b | 其他先进先出 | 单向 | 无 | NO | 28.57 ns | 2.65mm | 10.4mm | 7.6mm | 2.34mm | 符合RoHS标准 | 含铅 |