参数资料
型号: IDT728985JG8
厂商: IDT, Integrated Device Technology Inc
文件页数: 1/13页
文件大小: 0K
描述: IC DGTL SW 256X256 44-PLCC
标准包装: 450
系列: 7200
类型: 多路复用器
电路: 1 x 8:8
独立电路: 1
电压电源: 单电源
电源电压: 4.75 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 带卷 (TR)
其它名称: 728985JG8
1
2001 Integrated Device Technology, Inc.
APRIL 2001
TIME SLOT INTERCHANGE
DIGITAL SWITCH
256 x 256
IDT728985
DSC-5708/2
.UNCTIONAL BLOCK DIAGRAM
.EATURES:
256 x 256 channel non-blocking switch
Automatic signal identification (ST-BUS, GCI)
8 RX inputs — 32 channels at 64 Kbit/s per serial line
8 TX outputs — 32 channels at 64 Kbit/s per serial line
Three-state serial outputs
Microprocessor Interface (8-bit data bus)
Frame Integrity for data applications
5V Power Supply
Operating Temperature Range -40
°°°°°C to +85°°°°°C
Available in 44-pin Plastic Leaded Chip Carrier (PLCC),
44-pin Plastic Quad Flatpack (PQFP) and 40-pin Plastic Dip
(P-DIP)
DESCRIPTION:
The IDT728985 is a ST-BUS/GCI compatible digital switch controlled by
a microprocessor. The IDT728985 can handle as many as 256, 64 Kbit/s input
and output channels. Those 256 channels are divided into 8 serial inputs and
outputs, each of which consists of 32 channels. The IDT728985 provides per-
channelvariableorconstantthroughputdelaymodesandmicroprocessorread
and write access to individual channels. As an important function of a digital
switch is to maintain sequence integrity and minimize throughput delay, the
IDT728985 is an ideal solution for most switching needs.
.UNCTIONAL DESCRIPTION
Frame sequence, constant throughput delay, and guaranteed minimum
delay are high priority requirements in today’s integrated data and multimedia
networks. The IDT728985 provides these functions on a per-channel basis
usingastandardmicroprocessorcontrolinterface. Eachoftheeightseriallines
is designed to switch 64 Kbit/s PCM or N x 64 Kbit/s data.
InProcessorMode,themicroprocessorcanaccesstheinputandoutputtime
slots to control other devices such as ISDN transceivers and trunk interfaces.
Supporting both GCI and ST-BUS formats, IDT728985 has incorporated an
internal circuit to automatically identify the polarity and format of the frame
synchronization.
A functional block diagram of the IDT728985 device is shown on page 1.
The serial streams operate continuously at 2.048 Mb/s and are arranged in
125
swideframeseachcontaining32,8-bitchannels. Eightinput(RX0-7)and
Microprocessor Interface
Control Register
Timing
Unit
RX0
RX1
RX2
RX3
RX4
RX5
RX6
RX7
TX0
TX1
TX2
TX3
TX4
TX5
TX6
TX7
ODE
F0i
C4i
VCC
CS
DS
R/
W A0/
A5
GND
CCO
DTA D0/
D7
5708 drw01
Receive
Serial Data
Streams
Data
Memory
Output MUX
Connection
Memory
Transmit
Serial Data
Streams
相关PDF资料
PDF描述
VI-25X-MW CONVERTER MOD DC/DC 5.2V 100W
VE-BWZ-MX-F1 CONVERTER MOD DC/DC 2V 30W
X9401WS24Z-2.7 IC XDCP QUAD 64-TAP 10K 24-SOIC
MPC92433AE IC SYNTHESIZER LVPECL 48-LQFP
VI-B1B-MY-F1 CONVERTER MOD DC/DC 95V 50W
相关代理商/技术参数
参数描述
IDT7290820J 功能描述:IC DGTL SW 2048X2048 84-PLCC RoHS:否 类别:集成电路 (IC) >> 逻辑 - 信号开关,多路复用器,解码器 系列:7200 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高,低:8mA,8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC(0.154",3.90mm 宽) 供应商设备封装:16-SOIC 包装:管件
IDT7290820J8 功能描述:IC DGTL SW 2048X2048 84-PLCC RoHS:否 类别:集成电路 (IC) >> 逻辑 - 信号开关,多路复用器,解码器 系列:7200 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高,低:8mA,8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC(0.154",3.90mm 宽) 供应商设备封装:16-SOIC 包装:管件
IDT7290820JG 功能描述:IC DGTL SW 2048X2048 84-PLCC RoHS:是 类别:集成电路 (IC) >> 逻辑 - 信号开关,多路复用器,解码器 系列:7200 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高,低:8mA,8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC(0.154",3.90mm 宽) 供应商设备封装:16-SOIC 包装:管件
IDT7290820JG8 功能描述:IC DGTL SW 2048X2048 84-PLCC RoHS:是 类别:集成电路 (IC) >> 逻辑 - 信号开关,多路复用器,解码器 系列:7200 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高,低:8mA,8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC(0.154",3.90mm 宽) 供应商设备封装:16-SOIC 包装:管件
IDT7290820PQF 功能描述:IC DGTL SW 2048X2048 100-PQFP RoHS:否 类别:集成电路 (IC) >> 逻辑 - 信号开关,多路复用器,解码器 系列:7200 标准包装:48 系列:74VHC 类型:多路复用器 电路:4 x 2:1 独立电路:1 输出电流高,低:8mA,8mA 电压电源:单电源 电源电压:2 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC(0.154",3.90mm 宽) 供应商设备封装:16-SOIC 包装:管件