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参数资料
| 型号： | MC74LCX2952SD |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 总线收发器 |
| 英文描述： | LVC/LCX/Z SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24 |
| 封装： | PLASTIC, SSOP-24 |
| 文件页数： | 23/43页 |
| 文件大小： | 383K |
| 代理商： | MC74LCX2952SD |
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MC74LCX2952
LCX DATA
BR1339 — REV 3
149
MOTOROLA
FUNCTION TABLE
Inputs
Data Ports
Operating Mode
OEAB
OEBA
CEAB
CEBA
CAB
CBA
An
Bn
Operating Mode
H
Input
l
↑
X
Load Register; Disable Outputs
↑
X
Hold; Disable Outputs
h
X
Hold; Disable Outputs
L
H
Input
Output
l
X
↑
X
l
h
L
H
Load A to B Register; Read B Output
↑
X
QA
Hold; Read B Output
h
X
QA
Hold; Read B Output
H
L
Output
Input
X
l
X
↑
L
H
l
h
Load B to A Register; Read A Output
X
↑
QB
X
Hold; Read A Output
X
h
X
QB
X
Hold; Read A Output
H = High Voltage Level; h = High Voltage Level One Setup Time Prior to the Low–to–High Clock Transition; L = Low Voltage Level; l = Low Voltage Level One Setup
Time Prior to the Low–to–High Clock Transition; X = Don’t Care;
↑ = Low–to–High Clock Transition; ↑ = NOT Low–to–High Clock Transition; QA = A input storage register;
QB = B input storage register; * = The clocks are not internally gated with either the Output Enables or the Source Inputs. Therefore, data at the A or B ports may be
clocked into the storage registers, at any time. For ICC reasons, Do Not Float Inputs.
ABSOLUTE MAXIMUM RATINGS*
Symbol
Parameter
Value
Condition
Unit
VCC
DC Supply Voltage
–0.5 to +7.0
V
VI
DC Input Voltage
–0.5
≤ VI ≤ +7.0
V
VO
DC Output Voltage
–0.5
≤ VO ≤ +7.0
Output in 3–State
V
–0.5
≤ VO ≤ VCC + 0.5
Note 1.
V
IIK
DC Input Diode Current
–50
VI < GND
mA
IOK
DC Output Diode Current
–50
VO < GND
mA
+50
VO > VCC
mA
IO
DC Output Source/Sink Current
±50
mA
ICC
DC Supply Current Per Supply Pin
±100
mA
IGND
DC Ground Current Per Ground Pin
±100
mA
TSTG
Storage Temperature Range
–65 to +150
°C
* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or
conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is
not implied.
1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.
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