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U3750BM 参数 Datasheet PDF下载

U3750BM图片预览
型号: U3750BM
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片电话线路 [One Chip Telephone Circuit]
分类和应用: 电信电路电话电路
文件页数/大小: 20 页 / 206 K
品牌: TEMIC [ TEMIC SEMICONDUCTORS ]
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U3750BM  
TELEFUNKEN Semiconductors  
Electrical Characteristics of Logical Part  
f
= 455 kHz (other specifications as under electrical characteristics)  
clock  
Parameters  
Test Conditions / Pins  
Symbol  
Min.  
Typ.  
Max.  
Unit  
V
2.4  
1.9  
2.75  
2.2  
2.5  
3.5  
2.9  
2.3  
V
V
V
V
RAM  
Speed-up off threshold  
Speed-up on threshold  
Logic operating voltage in  
normal mode  
I = 8 mA  
I = 15 to 70 mA  
L
V
SOFF  
L
V
SON  
I
RAM  
Oscillator on  
Leakage  
V
RAM  
= 3.5 V  
800  
300  
A
A
Inputs: C1, C2, C3, C4,  
C5, C6, DC/FV, FLASH  
Input voltage low, V  
Input voltage high, V  
0.2  
V
V
IL  
0.8  
V
RAM  
IH  
V
RAM  
Keyboard pins: C1, C2,  
C3, C4, C5, C6  
Internal pull down  
Output current  
V
V
= 3.5 V  
= 0 V  
15  
0.8  
50  
2.5  
A
A
IL  
IH  
FLASH, DC/FV  
Internal pull-up current  
IPV  
V
V
= 0 V  
= 3.5 V  
0.5  
5
1
A
IL  
IH  
Leakage current  
Timing and frequency  
Reset time t (see figure 6  
and 7)  
In mode 60/40  
In mode 66/33 and DTMF mode  
30  
33  
5
ms  
ms  
ms  
r
Clock start-up time t  
on  
Time line break generating  
a reset: t  
In mode 60/40  
In mode 66/33 and DTMF mode  
In mode 60/40  
290  
319  
14  
300  
330  
34  
ms  
ms  
ms  
ms  
lb  
Debounce time, t  
24  
26.4  
e
In mode 66/33 and DTMF mode  
15.4  
37.4  
RESET output (with 390  
series)  
Output low current  
Output high current  
V
OL  
V
OL  
= 2.5 V  
= 0.5 V  
I
I
0.25  
0.25  
1.2  
1.2  
mA  
mA  
OL  
OH  
OL output  
Output low current  
Output high current  
V
OL  
= 0.5 V  
I
I
2
1
20  
4
A
mA  
OL  
OH  
MF output  
High impedance  
V
= 1.4 V  
0.5  
350  
550  
550  
350  
A
A
A
A
A
OHI  
FL = L, FH = H, V = 3.5 V  
FB = L, FH = H, V = 0 V  
FB = H, FH = L, V = 3.5 V  
FB = H, FH = L, V = 0 V  
150  
200  
200  
150  
OH  
OH  
OH  
OH  
CK Input  
Low input leakage  
High input leakage  
V
IL  
V
IL  
= 0.5 V  
= 3.0 V  
1
1
A
A
10 (20)  
Rev. A1: 16.07.1996