MT8888CE1 Zarlink, MT8888CE1 Datasheet - Page 8

• Manufacturer Part Number: MT8888CE1
• Description: DTMF TXRX 3.58MHz CMOS 5V 20-Pin PDIP Tube
• Manufacturer: Zarlink

Specifications of MT8888CE1

• Package: 20PDIP
• Operating Frequency: 3.58 MHz
• Typical Supply Current: 7 mA
• Typical Operating Supply Voltage: 5 V
• Minimum Operating Supply Voltage: 4.75 V
• Maximum Operating Supply Voltage: 5.25 V

V
ESt
St/GT
RX
b3
b2
Read
Status
Register
IRQ/CP
in
EVENTS
0
-RX
3
t
REC
DECODED TONE # (n-1)
A
LEVEL
(dBm)
-25
t
Figure 7 - Receiver Timing Diagram
DP
0
Figure 8 - Call Progress Response
= Reject
= May Accept
= Accept
Zarlink Semiconductor Inc.
t
REC
TONE #n
MT8888C
B
250
FREQUENCY (Hz)
t
GTP
8
t
PStRX
t
PStb3
t
# n
ID
500
C
t
DA
t
GTA
TONE
#n + 1
D
750
t
DO
E
TONE
#n + 1
# (n + 1)
Data Sheet
F
V
TSt