U3750BM Datasheet, PDF (10/20 Pages) TEMIC Semiconductors – One Chip Telephone Circuit

U3750BM
TELEFUNKEN Semiconductors
Electrical Characteristics of Logical Part
f_clock = 455 kHz (other specifications as under electrical characteristics)
Parameters
Test Conditions / Pins
Symbol Min. Typ. Max. Unit
V_RAM
Speed-up off threshold
Speed-up on threshold
Logic operating voltage in
normal mode
I_L = 8 mA
I_L = 15 to 70 mA
2.4
2.75
2.9
V
V_SOFF
1.9
2.2
2.3
V
V_SON
2.5
V
3.5
V
I_RAM
Oscillator on
Leakage
V_RAM = 3.5 V
800
mA
300
mA
Inputs: C1, C2, C3, C4,
C5, C6, DC/FV, FLASH
Keyboard pins: C1, C2,
C3, C4, C5, C6
Internal pull down
Output current
FLASH, DC/FV
Internal pull-up current
IPV
Leakage current
Input voltage low, V_IL
Input voltage high, V_IH
V_IL = 3.5 V
V_IH = 0 V
V_IL = 0 V
V_IH = 3.5 V
0.8
V_RAM
15
0.8
0.5
0.2
V
V_RAM
V
50
mA
2.5
mA
5
mA
1 mA
Timing and frequency
Reset time t_r (see figure 6 In mode 60/40
and 7)
In mode 66/33 and DTMF mode
30
ms
33
ms
Clock start-up time t_on
Time line break generating
5
ms
a reset: t_lb
In mode 60/40
290
In mode 66/33 and DTMF mode
319
300
ms
330
ms
Debounce time, t_e
In mode 60/40
In mode 66/33 and DTMF mode
RESET output (with 390 W
14
24
34
ms
15.4
26.4
37.4
ms
series)
Output low current
Output high current
V_OL = 2.5 V
V_OL = 0.5 V
I_OL
0.25
I_OH
0.25
1.2
mA
1.2
mA
OL output
Output low current
Output high current
V_OL = 0.5 V
I_OL
2
I_OH
1
20
mA
4
mA
MF output
High impedance
V_OHI = 1.4 V
FL = L, FH = H, V_OH = 3.5 V
150
FB = L, FH = H, V_OH = 0 V
200
FB = H, FH = L, V_OH = 3.5 V
200
FB = H, FH = L, V_OH = 0 V
150
0.5
mA
350
mA
550
mA
550
mA
350
mA
CK Input
Low input leakage
High input leakage
V_IL = 0.5 V
V_IL = 3.0 V
1
mA
1
mA
10 (20)
Rev. A1: 16.07.1996