參數(shù)資料
型號(hào): MC145750VFU
廠商: MOTOROLA INC
元件分類: 通信及網(wǎng)絡(luò)
英文描述: QPSK Encoder
中文描述: SPECIALTY TELECOM CIRCUIT, PQFP48
封裝: PLASTIC, VQFP-48
文件頁(yè)數(shù): 4/12頁(yè)
文件大?。?/td> 296K
代理商: MC145750VFU
MC145750
4
MOTOROLA
SWITCHING CHARACTERISTICS
(TA = 25
°
C)
Parameters
Symbol
Condition
Min
Typ*
Max
Unit
Input Voltage
High–Level
VIH
VIL
VOH
VOL
tsu
th
VDD x 0.7
V
Low–Level
VDD x 0.3
Output Voltage
High–Level
BW, PNO
VDD x 0.9
Low–Level
VDD x 0.1
Data Set–Up Time
TXD, DS, STBY
10
ns
Data Hold Time
TXD, DS, STBY
10
Data Output Propagation Delay
tpd
TD
BW, PNO
1.5
3
μ
s
I/Q Output Propagation Delay
Iout, Qout
DRATE = L
4
6
Data Rate
VDD = 3 V
450
kbps
DRATE = H
55
VDD = 5 V
DRATE = L
800
DRATE = H
100
Clock Input Duty Cycle
DCLK
45
50
55
%
VCO Oscillation Frequency
VDD = 3 V
VDD = 5 V
fVCO1
fVCO2
20
MHz
32
* Typical numbers are not guaranteed.
Figure 1. Timing Diagram
DS
DCLK
TXD
BW
Iout/Qout
PNO
tsu
tsu
1/fclk
tPD
th
tsu
th
tPD
tsu
th
tD
tPD
tD
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