u3760mb-n ATMEL Corporation, u3760mb-n Datasheet - Page 15

• Manufacturer Part Number: u3760mb-n
• Description: Low-voltage Standard Telephone Circuit
• Manufacturer: ATMEL Corporation

Rev. A1, 31-May-99
DC Characteristics Dialer
V
AC Characteristics Dialer
Memory rentention current
Pre-emphases
DTMF distortion
DP output sink current
Keyboard input drive
current
Keyboard input sink current V
Keyboard resistance
Key tone output current
Key tone frequency
Keypad active in debounce
Key release debounce
Pre-digit pause
Inter-digit pause
( auto dialing )
Make/break ratio
DTMF output duration
Inter-tone pause
Flash break time
F1
F2
F3
Flash pause time
Pause time
DD2
= 2.7 V, f
Parameters
Parameters
OSC
= 3.58 MHz, all outputs unloaded, S9b
HKS = 1, V
Column/Row
R
V
V
t = 50 ms
B/M pin = floating 10 ppS
B/M pin = low
10 ppS
20 ppS
B/M pin = floating
B/M pin = low
Auto dialing
Auto dialing
R
R
R
F1
F2
F3
L
1
2
3
PO
I
I
= 0 V
= 2.7 V
Test Conditions / Pins
Test Conditions / Pins
grounded
grounded
grounded
= 5 k
= 0.5 V
Preliminary Information
W
DD2
= 1.0 V
Symbol
Symbol
t
M/B
t
t
t
I
t
t
I
KRD
t
I
I
t
t
KID
PDP
PDP
t
IDP
IDP
MR
ITP
KD
TD
KS
FB
t
d
PL
FP
P
Min.
Min.
200
0.5
30
1
U3760MB-N
40:60
33:67
1240
Typ.
Typ.
33.3
– 30
400
"
800
500
250
600
1.0
3.6
20
20
40
87
87
94
2
1
Max.
Max.
– 23
0.2
3
5
Unit
Unit
15 (20)
mA
mA
m
m
m
k
dB
dB
Hz
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
%
%
s
W
A
A
A