參數(shù)資料
型號： MC74LCX2952DT
廠商： MOTOROLA INC
元件分類： 通用總線功能
英文描述： LOW-VOLTAGE CMOS OCTAL REGISTERED TRANSCEIVER
中文描述： LVC/LCX/Z SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封裝： PLASTIC, TSSOP-24
文件頁數(shù)： 5/10頁
文件大小： 182K
代理商： MC74LCX2952DT
MC74LCX2952
LCX DATA
BR1339 — REV 3
5
MOTOROLA
AC CHARACTERISTICS
(Note 3.; tR = tF = 2.5ns; CL = 50pF; RL = 500
)
Limits
TA = –40
°
C to +85
°
C
VCC = 3.0V to 3.6V
Min
VCC = 2.7V
Min
Symbol
Parameter
Waveform
Max
Max
Unit
fmax
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
ts
th
ts
th
tw
tOSHL
tOSLH
3. These AC parameters are preliminary and may be modified prior to release. The maximum AC limits are design targets. Actual performance
will be specified upon completion of characterization.
4. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (tOSHL) or LOW–to–HIGH (tOSLH); parameter
guaranteed by design.
Clock Pulse Frequency
3
150
MHz
Propagation Delay
Clock to Output
1
1.5
1.5
8.0
8.0
1.5
1.5
9.0
9.0
ns
Output Enable Time to
High and Low Level
2
1.5
1.5
8.0
8.0
1.5
1.5
9.0
9.0
ns
Output Disable Time From
High and Low Level
2
1.5
1.5
6.0
6.0
1.5
1.5
7.0
7.0
ns
Setup Time, HIGH to LOW Data to Clock
3
2.5
2.5
ns
Hold Time, HIGH to LOW Data to Clock
3
1.5
1.5
ns
Setup Time, HIGH to LOW CExx to Clock
3
2.5
2.5
ns
Hold Time, HIGH to LOW CExx to Clock
3
1.5
1.5
ns
Clock Pulse Width, HIGH or LOW
3
3.3
3.3
ns
Output–to–Output Skew
(Note 4.)
1.0
1.0
ns
DYNAMIC SWITCHING CHARACTERISTICS
TA = +25
°
C
Symbol
Characteristic
Condition
Min
Typ
Max
Unit
VOLP
Dynamic LOW Peak Voltage (Note 5.)
VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V
0.8
V
VOLV
5. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is
measured in the LOW state.
Dynamic LOW Valley Voltage (Note 5.)
VCC = 3.3V, CL = 50pF, VIH = 3.3V, VIL = 0V
0.8
V
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Condition
Typical
Unit
CIN
Input Capacitance
VCC = 3.3V, VI = 0V or VCC
7
pF
CI/O
Input/Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8
pF
CPD
Power Dissipation Capacitance
10MHz, VCC = 3.3V, VI = 0V or VCC
25
pF
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