MultiKey iButton

iButton DESCRIPTION The DS1991 MultiKey iButton is a rugged read/write data carrier that acts as three separate electronic keys, offering 1,152 bits of secure, nonvolatile memory. Each key is 384 bits long with distinct 64-bit password and public ID fields (Figure 1). The password field must be m

文件：290.24 Kbytes 页数：14 Pages

Dallas

iButton多密钥

iButton®多密钥(DS1991)是坚固耐用的读/写操作数据载体，它有三个独立的电子密钥，提供1,152位安全、非易失存储器。每个密钥分区包括384位，具有独立的64位密码和公共识别区(完整数据资料中的图1)；密码区必须匹配才能访问安全存储器。数据按照1-Wire®协议传输，只需单条数据线和地回路。512位的暂存器能够保证安全存储器的数据完整性。数据首先写到能读回的暂存器；数据被校验确认后，发出复制暂存器命令，以便将数据传送到存储器。这个过程确保了在改变存储器内容时的数据完整性。每片DS1991内部都有在工厂光刻的48位序列码，为唯一的身份验证提供了保证，也确保了可绝对跟踪功能；DS199 \n• 安全可靠的1,152位的读/写、非易失存储器 \n• 若64位密码不匹配，则安全存储器不会被译解 \n• 存储器被分成3个分区，每分区包含384位 \n• 每个分区都有64位的密码和识别码 \n• 512位的暂存器确保了数据传送的完整性 \n• 工作温度范围：-40°C至+70°C \n• 数据可保持10年以上;

ADI

亚德诺

MultiKey iButton

iButton DESCRIPTION The DS1991 MultiKey iButton is a rugged read/write data carrier that acts as three separate electronic keys, offering 1,152 bits of secure, nonvolatile memory. Each key is 384 bits long with distinct 64-bit password and public ID fields (Figure 1). The password field must be m

文件：290.24 Kbytes 页数：14 Pages

Dallas

For use with the 8960 Series 10 (E5515C) Wireless Communications Test Set

文件：512.69 Kbytes 页数：6 Pages

KEYSIGHT

是德科技

VARACTOR DIODES UHF Microwave Super-Hyperabrupt Junction

文件：90.56 Kbytes 页数：2 Pages

Microsemi

美高森美

UHF-MICROWAVE SUPER HYPERABRUPT JUNCTION VARACTOR DIODES

DESCRIPTION The KV1900 series of Super Hyperabrupt Varactor diodes combines low voltage with high ratio tuning. They feature grown junction mesa technology for the highest Q commercially available. Passivation is our tough MIL-Spec ceramic glass for lowest leakage even at temperature extremes or

文件：58.36 Kbytes 页数：1 Pages

Microsemi

美高森美