U3750BM
Electrical Characteristics of Logical Part
f
clock
= 455 kHz (other specifications as under electrical characteristics)
Parameters
V
RAM
Speed-up off threshold
Speed-up on threshold
Logic operating voltage in
normal mode
I
RAM
Oscillator on
Leakage
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
Timing and frequency
Reset time t
r
(see figure 6
and 7)
Clock start-up time t
on
Time line break generating
a reset: t
lb
Debounce time, t
e
RESET output (with 390
W
series)
Output low current
Output high current
OL output
Output low current
Output high current
MF output
High impedance
Test Conditions / Pins
I
L
= 8 mA
I
L
= 15 to 70 mA
Symbol
V
SOFF
V
SON
TELEFUNKEN Semiconductors
Min.
2.4
1.9
Typ.
2.75
2.2
2.5
3.5
Max.
2.9
2.3
Unit
V
V
V
V
V
RAM
= 3.5 V
Input voltage low, V
IL
Input voltage high, V
IH
0.8
V
RAM
800
300
0.2
V
RAM
m
A
m
A
V
V
V
IL
= 3.5 V
V
IH
= 0 V
V
IL
= 0 V
V
IH
= 3.5 V
15
0.8
0.5
50
2.5
5
1
m
A
m
A
m
A
mA
ms
ms
ms
In mode 60/40
In mode 66/33 and DTMF mode
30
33
5
290
319
14
15.4
300
330
34
37.4
In mode 60/40
In mode 66/33 and DTMF mode
In mode 60/40
In mode 66/33 and DTMF mode
24
26.4
ms
ms
ms
ms
V
OL
= 2.5 V
V
OL
= 0.5 V
V
OL
= 0.5 V
I
OL
I
OH
I
OL
I
OH
0.25
0.25
2
1
1.2
1.2
20
4
0.5
350
550
550
350
1
1
mA
mA
mA
m
A
m
A
m
A
m
A
m
A
m
A
m
A
m
A
V
OHI
= 1.4 V
FL = L, FH = H, V
OH
= 3.5 V
FB = L, FH = H, V
OH
= 0 V
FB = H, FH = L, V
OH
= 3.5 V
FB = H, FH = L, V
OH
= 0 V
V
IL
= 0.5 V
V
IL
= 3.0 V
150
200
200
150
CK Input
Low input leakage
High input leakage
10 (20)
Rev. A1: 16.07.1996
TEMIC [ TEMIC SEMICONDUCTORS ]
