参数资料
型号: YTD428
厂商: Yamaha Corporation
英文描述: DSU LSI for the ISDN Terminal Equipment(用于ISDN终端设备的数据服务集成电路)
中文描述: DSU的大规模集成电路的ISDN终端设备(用于综合业务数字网终端设备的数据服务集成电路)
文件页数: 3/14页
文件大小: 174K
代理商: YTD428
- 11 -
t SW
2.4 V
0.4 V
2.4 V
0.4 V
1.35 V
0.15 V
-0.15 V
-1.35 V
t SRH
t SRL
t SW
t SR
t SF
t SR
t SF
t SDZ
t SFH
t SFL
t SRL
t SRH
t GAP
Transmit signal (O)
(LOI - LO2)
LTD (I)
HTD (I)
Figure 3 Transmit Timing
Parameter
Symbol
Condition
Min.
Typ.
Max.
Units
HTD, LTD Pulse Period
tSW
4.95
5.45
s
HTD, LTD Pulse Gap
tGAP
0
260
ns
HTD, LTD Rise Time
tSR
260
ns
HTD, LTD Fall Time
tSF
30
ns
Transmit Signal
Delay Time
tSRL
Note 1
0
490
ns
tSRH
Note 1
490
1010
ns
tSFH
Note 1
0
165
ns
tSFL
Note 1
165
685
ns
Zero Cross Delay Time
tSDZ
Note 1
490
1010
ns
s T Reference Point Transmit Characteristic (TE mode)
(VDD = 5.0 V, Top = -20 ~ 70
°C, CL = 50 pF)
Note 1
Measuring with RL voltage drop as shown in Figure 4.
Note 2
Figure 3 shows the timing when TDP = “H”. When TDP = “L”, the output signal polarity from HRD and LRD pins are
inverted.
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