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CTA88-000-SS 参数 Datasheet PDF下载

CTA88-000-SS图片预览
型号: CTA88-000-SS
PDF下载: 下载PDF文件 查看货源
内容描述: 8位地址 - 8位数据编码器/解码器 [8 bit Address - 8 bit Data encoder/decoder]
分类和应用: 解码器消费电路商用集成电路编码器
文件页数/大小: 6 页 / 327 K
品牌: RADIOMETRIX [ RADIOMETRIX LTD ]
 浏览型号CTA88-000-SS的Datasheet PDF文件第1页浏览型号CTA88-000-SS的Datasheet PDF文件第2页浏览型号CTA88-000-SS的Datasheet PDF文件第3页浏览型号CTA88-000-SS的Datasheet PDF文件第4页浏览型号CTA88-000-SS的Datasheet PDF文件第6页  
Incompatibilities: Certain operating modes are not compatible with some of the others:  
RX 101 (toggle) doesn't work with TX 101 (periodic send) as the outputs switch on and off at the send  
rate  
RX 100 (set and reset) doesn't work with TX 101 (as the response is sluggish) and doesn't need TX  
010 (constant)  
RX 101 (toggle) is also not best suited to extreme range operation, where the initiation can be a little  
sporadic.  
(At extreme range, latched (011) or set/reset (100) are the best receiver modes, combined with TX 100  
(send on any '1') as in this mode the failure of any single burst to be received matters less, as the  
operator can continue to operate the transmitter until the receiver actuates )  
Serial operation: The CTA88 is capable of a very simple, single byte, serial link operation. It is  
selected by a '110' mode input.  
This function is mainly intended for diagnostic work in the lab, but it does allow a pc to send or receive  
CTA88 command bursts. Address is still selected by the parallel inputs  
On the RX:  
D4 = 'true' RS232 output  
(+ve = low (0), 0V = idle/mark state)  
D5 = 'inverted' RS232 output (+ve = idle/'mark' (1) state)  
D6 : high for 500uS before, and during, serial byte output  
On the TX  
D4 = RS232 input  
D5 : low = set 'true' input polarity, high = set 'inverted' input polarity  
In all cases a single 9600 baud byte is received or sent.  
The link is not transparent: on the TX end the 'tx on' pin can be used as a 'busy' output  
Timeout: In modes 001 and 010, the receiver outputs the last received data for a given period, before  
resetting D0-D7.  
Any subsequent transmission will over-ride the current output state and reset the timer, even if the  
timeout period has not expired.  
The short period is set to be slightly longer than the time between consecutive transmit bursts in a  
continuous mode.  
The long timeout is usable with the randomised periodic transmission mode (101), as the 3 second  
timeout is longer than the longest delay between transmissions in this mode.  
Versions of the chip can be supplied with this period extended to suit customer requirements  
Ordering Information:  
CTA88-000-SS  
CTA88-000-SO  
CTA88-000-DIL  
Standard (4MHz)- No Frequency - Shrink Small Outline (SSOP)  
Standard (4MHz)- No Frequency - Small Outline (SO)  
Standard (4MHz)- No Frequency - Plastic Dual In Package (PDIP)  
CTA88L-000-SS  
CTA88L-000-SO  
CTA88L-000-DIL  
Low Voltage (4MHz) - No Frequency - SSOP  
Low Voltage (4MHz) - No Frequency - SO  
Low Voltage (4MHz) - No Frequency - PDIP  
CTA88H-000-SS  
CTA88H-000-SO  
CTA88H-000-DIL  
High Speed (4MHz-20MHz) - No Frequency - SSOP  
High Speed (4MHz-20MHz) - No Frequency - SO  
High Speed (4MHz-20MHz) - No Frequency - PDIP  
Radiometrix Ltd  
CTA88  
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