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參數資料
| 型號： | MC74LVQ646SD |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | LOW-VOLTAGE CMOS OCTAL TRANSCEIVER/ REGISTERED TRANSCEIVER |
| 中文描述： | LVQ SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24 |
| 封裝： | PLASTIC, SSOP-24 |
| 文件頁數： | 5/10頁 |
| 文件大小： | 230K |
| 代理商： | MC74LVQ646SD |
MC74LVQ646
LCX DATA
BR1478
5
MOTOROLA
DYNAMIC SWITCHING CHARACTERISTICS
(VCC = 3.3V)
TA = +25
°
C
Symbol
Characteristic
Condition
Min
Typ
Max
Unit
VOLP
Dynamic LOW Peak Voltage (Note 1)
CL = 50pF, VIH = 3.3V, VIL = 0V
0.6
1.0
V
VOLV
Dynamic LOW Valley Voltage (Note 1)
CL = 50pF, VIH = 3.3V, VIL = 0V
–0.5
–1.0
V
VIHD
High Level Dynamic Input Voltage
(Note 2)
Input–Under–Test Switching 0V to Threshold,
f=1MHz
1.5
2.0
V
VILD
Low Level Dynamic Input Voltage
(Note 2)
Input–Under–Test Switching 3.3V to Threshold,
f=1MHz
1.5
0.8
V
1. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW. The remaining output is measured in the
LOW state.
2. Number of data inputs is defined as “n” switching, “n–1” inputs switching 0V to 3.3V.
AC CHARACTERISTICS1
(tR = tF = 2.5ns; CL = 50pF; RL = 500
)
Limits
TA = +25
°
C
TA = –40
°
C to +85
°
C
VCC = 3.0V to 3.6V
Min
Max
VCC = 3.0V to 3.6V
Min
Typ
VCC = 2.7V
Min
Typ
VCC = 2.7V
Max
Symbol
Parameter
Max
Max
Unit
fmax
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
tOSHL
tOSLH
1. 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.
2. 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
150
150
MHz
Propagation Delay
Clock to Output
1.5
1.5
12.5
10.0
15.0
13.0
1.5
1.5
14.0
12.0
18.0
15.0
1.5
1.5
17.0
14.5
20.0
17.0
ns
Propagation Delay
Input to Output
1.5
1.5
9.5
8.0
12.0
11.0
1.5
1.5
11.0
9.5
13.5
12.5
1.5
1.5
13.5
12.0
14.5
14.0
ns
Propagation Delay
Select to Output
1.5
1.5
9.5
8.5
12.0
11.0
1.5
1.5
11.0
10.0
13.0
12.5
1.5
1.5
13.0
12.5
14.5
14.0
ns
Output Enable Time
OE to An, Bn
1.5
1.5
8.0
9.0
10.5
11.0
1.5
1.5
9.5
10.0
12.0
12.5
1.5
1.5
11.0
12.0
13.0
14.0
ns
Output Disable Time
OE to An, Bn
1.5
1.5
9.0
8.5
11.0
10.5
1.5
1.5
10.5
9.5
12.5
12.5
1.5
1.5
12.0
12.0
14.0
14.0
ns
Output Enable Time
DIR to An, Bn
1.5
1.5
9.0
10.0
12.0
12.0
1.5
1.5
12.0
11.0
14.0
14.0
1.5
1.5
13.0
12.5
16.0
16.0
ns
Output Disable Time
DIR to An, Bn
1.5
1.5
9.0
10.0
11.0
12.5
1.5
1.5
10.0
13.0
13.0
15.5
1.5
1.5
12.0
14.0
15.0
18.0
ns
Output–to–Output Skew
(Note 2)
1.0
1.0
1.5
1.5
1.0
1.0
1.5
1.5
1.5
1.5
ns
AC OPERATING REQUIREMENTS
(tR = tF = 2.5ns; CL = 50pF; RL = 500
)
Limits
TA = +25
°
C
TA = –40
°
C to +85
°
C
VCC = 3.0V to 3.6V
Min
VCC = 3.0V to 3.6V
Min
VCC = 2.7V
Min
VCC = 2.7V
Min
Symbol
Parameter
Unit
ts
th
tw
Setup TIme, HIGH or LOW Dn to LE
2.5
4.0
2.5
4.5
ns
Hold TIme, HIGH or LOW Dn to LE
1.5
1.5
1.5
1.5
ns
LE Pulse Width, HIGH
3.3
5.0
3.3
6.0
ns
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