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參數(shù)資料
| 型號： | CMOS-8LHD |
| 廠商： | NEC Corp. |
| 英文描述： | Universal Serial Bus Interface(通用總線串行接口門陣列) |
| 中文描述： | 通用串行總線接口（通用總線串行接口門陣列） |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 32K |
| 代理商： | CMOS-8LHD |
NEC Electronics Inc.
Preliminary
A12569EU1V0PB00
March 1997
CMOS ASIC
Universal Serial Bus Interface
Product Brief
NEC's USB Family Support
Family
Full
Speed
Low
Speed
Full/Low
Speed
CMOS-8LH
(0.5μm Gate Array)
CMOS-8LHD
(0.5μm Gate Array)
CB-C8VM
(0.5μm Cell-Based)
Jun-97
Jun-97
Jun-97
CB-C9
Under
Under
Under
(0.35μm Cell-Based)
Development
Development
Development
Applications
Today’s mainstream Pentium-based multimedia PCs and
most of the last generation 486-based PCs have many
low-speed “l(fā)egacy” I/O functions. These functions are
either attached to the 16-bit ISA-Bus (Industry Standard
Architecture) or have become ISA-functions integrated
into an I/O Bridge. This I/O Bridge is connected to a high-
bandwidth local bus like the PCI-bus or VESA-VLB. Due
to the hardware dependency of these functions, their
migration to a virtual OS like Microsoft Windows
95 or
Windows NT
has been difficult.
USB is an industry-standard created to solve legacy and
connectivity problems, consolidate the I/O functions, and
provide a means for “computer telephony integration”.
Although USB was initially developed for the x86-based
PC platform, the technology is not excluded from the other
platforms like PowerPC, Sparc, MIPS, Alpha,
etc. In many ways, USB is helping to shape the multi-
media PC of the coming decade.
USB Features
Two data transfer speeds:
– 12 Mbits/s for full-speed
– 1.5 Mbits/s for low-speed
Differential output driver
200mV differential receiver sensitivity
Special +/- full and low speed USB I/Os
Dual speed I/Os with full and low speed select
Multimedia PC with USB Technology
Overview
The Universal Serial Bus (USB) is a serial interface that
provides connectivity for peripheral devices such as the
printer, mouse, and keyboards. Two data transfer speeds
are supported: full-speed at 12 Mbits/s and low-speed at
1.5 Mbits/s.
The driver side is of differential output, with output enable
and slew rate control. The receiver side has a differential
signal sensitivity of 200mV and supports a single-end
signal level.
The macro features either an on-board pull-up resistor at
the upstream side or a pull-down resistor at the down-
stream side. External pull-up and pull-down resistors are
therefore required.
All non-NEC trademarks are the property of their respective owners.
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| CMOS-CELL-LIBRARY | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| CMOSH2-4L | 制造商:CENTRAL 制造商全稱:Central Semiconductor Corp 功能描述:SURFACE MOUNT HIGH CURRENT, LOW VF SILICON SCHOTTKY DIODE |
| CMOSH2-4L TR | 功能描述:Diode Schottky 40V 200mA Surface Mount SOD-523 制造商:central semiconductor corp 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 二極管類型:肖特基 電壓 - DC 反向（Vr）（最大值）:40V 電流 - 平均整流（Io）:200mA 不同 If 時的電壓 - 正向（Vf）:500mV @ 200mA 速度:小信號 =< 200mA（Io），任意速度 反向恢復(fù)時間（trr）:5ns 不同?Vr 時的電流 - 反向漏電流:50μA @ 20V 不同?Vr，F(xiàn) 時的電容:* 安裝類型:表面貼裝 封裝/外殼:SC-79，SOD-523 供應(yīng)商器件封裝:SOD-523 工作溫度 - 結(jié):-65°C ~ 150°C 標(biāo)準(zhǔn)包裝:1 |
| CMOSH2-4L_10 | 制造商:CENTRAL 制造商全稱:Central Semiconductor Corp 功能描述:SURFACE MOUNT HIGH CURRENT, LOW VF SILICON SCHOTTKY DIODE |
| CMOSH-3 | 功能描述:肖特基二極管與整流器 Enhanced Spec RoHS:否 制造商:Skyworks Solutions, Inc. 產(chǎn)品:Schottky Diodes 峰值反向電壓:2 V 正向連續(xù)電流:50 mA 最大浪涌電流: 配置:Crossover Quad 恢復(fù)時間: 正向電壓下降:370 mV 最大反向漏泄電流: 最大功率耗散:75 mW 工作溫度范圍:- 65 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-143 封裝:Reel |
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