5秒后页面跳转
捷配首页

Datasheet > 电信电路 > 模拟传输接口> MC33121
MC33121 PDF预览

MC33121

更新时间： 2024-11-23 22:39:55
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA /
页数 文件大小 规格书
32页 573K
描述
LOW VOLTAGE SUBSCRIBER LOOP INTERFACE CIRCUIT

阅读下载

中文翻译

获取价格

MC33121 数据手册

 浏览型号MC33121的Datasheet PDF文件第2页浏览型号MC33121的Datasheet PDF文件第3页浏览型号MC33121的Datasheet PDF文件第4页浏览型号MC33121的Datasheet PDF文件第5页浏览型号MC33121的Datasheet PDF文件第6页浏览型号MC33121的Datasheet PDF文件第7页 
Order this document  
by MC33121/D  
SEMICONDUCTOR TECHNICAL DATA  
Thin Film Silicon Monolithic Integrated Circuit  
P SUFFIX  
PLASTIC PACKAGE  
CASE 738  
20  
The MC33121 is designed to provide the interface between the 4–wire side of  
a central office, or PBX, and the 2–wire subscriber line. Interface functions  
include battery feed, proper loop termination AC impedance, hookswitch  
detection, adjustable transmit, receive, and transhybrid gains, and single/  
double fault indication. Additionally, the MC33121 provides a minimum of 58 dB  
of longitudinal balance (4–wire and 2–wire).  
The transmit and receive signals are referenced to analog ground, while  
digital signals are referenced to digital ground, easing the interface to codecs,  
filters, etc. The 2 status outputs (hookswitch and faults) and the Power Down  
Input are TTL/CMOS compatible. The Power Down Input permits local  
shutdown of the circuit.  
1
FN SUFFIX  
PLCC  
CASE 776  
28  
1
ORDERING INFORMATION  
Internal drivers allow the external loop current pass transistors to be standard  
bipolar transistors (non–Darlington).  
The MC33121 is available in a 20 pin DIP and a 28 pin PLCC surface mount  
package.  
Temperature  
Range  
Device  
Package  
Plastic DIP  
PLCC  
MC33121P  
– 40° to + 85°C  
MC33121FN  
•
•
•
•
•
•
•
•
•
•
•
58 dB Longitudinal Balance Guaranteed; 4–wire and 2–wire  
Transmit, Receive, and Transhybrid Gains Externally Adjustable  
Return Loss Externally Adjustable  
Proper Hookswitch Detection With 30 kΩ Leakage  
Single/Double Fault Indication With Shutdown for Thermal Protection  
Critical Sense Resistors Included Internally  
Standard Power Supplies: – 21.6 V to – 42 V, and + 5.0 V, ± 10%  
On–Hook Transmission  
Power Down Input (TTL and CMOS Compatible)  
Operating Ambient Temperature: – 40°C to + 85°C  
Available in a 20 Pin DIP and 28 Pin PLCC Package  
SIMPLIFIED BLOCK DIAGRAM  
V
CC  
V
V
(+5.0 V)  
DD  
CURRENT  
MIRROR  
CURRENT  
MIRROR  
CURRENT  
MIRROR  
DG  
EP  
BP  
*
(DIG. GND)  
PDI/ST2  
ST1  
–
+
TIP  
CP  
V
V
EE  
*
*
V
HOOK STATUS AND  
FAULT DETECTION  
AND BIAS CONTROL  
AG  
+
–
TSI  
RSI  
(ANA. GND)  
RXI  
CC  
BIAS  
+
–
TXO  
CN  
BN  
–
+
RING  
CURRENT  
CURRENT  
MIRROR  
CURRENT  
MIRROR  
RFO  
CF  
MIRROR  
EN  
V
QB  
*
MC33121  
V
EE  
(BATTERY)  
* Indicates trimmed resistor  
REV 1.0  
4/96  
Motorola, Inc. 1996  
1234567...32

中文翻译

下载PDF

与MC33121相关器件

型号 品牌 获取价格 描述 数据表
MC33121FN MOTOROLA

获取价格

 		LOW VOLTAGE SUBSCRIBER LOOP INTERFACE CIRCUIT
MC33121FNR2 MOTOROLA

获取价格

 		SLIC, 2-4 Conversion, PQCC28, PLASTIC, LCC-28
MC33121P MOTOROLA

获取价格

 		LOW VOLTAGE SUBSCRIBER LOOP INTERFACE CIRCUIT
MC33128 MOTOROLA

获取价格

 		POWER MANAGEMENT CONTROLLER
MC33128D MOTOROLA

获取价格

 		POWER MANAGEMENT CONTROLLER
MC33128D ONSEMI

获取价格

 		1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, PLASTIC, SO-16
MC33128DR2 ONSEMI

获取价格

 		1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, PLASTIC, SO-16
MC33128DR2 MOTOROLA

获取价格

 		Power Supply Support Circuit, Fixed, 1 Channel, PDSO16, PLASTIC, SO-16
MC33129 FREESCALE

获取价格

 		High Performance Current Mode Controllers
MC33129 MOTOROLA

获取价格

 		HIGH PERFORMANCE CURRENT MODE CONTROLLERS

与MC33121相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证