参数资料
型号: 74LCX652WMX
厂商: Fairchild Semiconductor
文件页数: 4/10页
文件大小: 0K
描述: IC TXRX/REGISTER LV 5V 24SOIC
标准包装: 1,000
系列: 74LCX
逻辑类型: 寄存收发器,非反相
元件数: 2
每个元件的位元数: 8
输出电流高,低: 24mA,24mA
电源电压: 2 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC
包装: 带卷 (TR)
3
www.fairchildsemi.com
7
4
LCX652
Functional Description
In the transceiver mode, data present at the HIGH imped-
ance port may be stored in either the A or B register or
both.
The select (SAB, SBA) controls can multiplex stored and
real-time.
The examples below demonstrate the four fundamental
bus-management functions that can be performed with the
Octal bus transceiver and receiver.
Data on the A or B data bus, or both can be stored in the
internal D flip-flop by LOW to HIGH transitions at the
appropriate Clock Inputs (CPAB, CPBA) regardless of the
Select or Output Enable Inputs. When SAB and SBA are in
the real time transfer mode, it is also possible to store data
without using the internal D flip-flops by simultaneously
enabling OEAB and OEBA. In this configuration each Out-
put reinforces its Input. Thus when all other data sources to
the two sets of bus lines are in a HIGH impedance state,
each set of bus lines will remain at its last state.
Real-Time Transfer
Bus B to Bus A
Real-Time Transfer
Bus A to Bus B
Transfer Storage
Data to A or B
Storage
OEAB
OEBA
CPAB CPBA SAB SBA
LL
X
L
OEAB OEBA CPAB CPBA SAB SBA
HH
X
L
X
OEAB
OEBA
CPAB CPBA SAB SBA
H
L
H or L H or L
H
OEAB
OEBA
CPAB CPBA SAB SBA
XH
XX
X
LX
X
XX
LH
XX
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