|
ML145442 Datasheet, PDF (1/11 Pages) LANSDALE Semiconductor Inc. – Single-Chip 300-Baud Modem | |||
|
ML145442
ML145443
SingleâChip 300âBaud Modem
Legacy Device: Motorola MC145442B, MC145443B
The ML145442 and ML145443 siliconâgate CMOS singleâchip lowâspeed
modems contain a complete frequency shift keying (FSK) modulator, demod-
ulator, and filter. These devices are compatible with CCITT V.21 (ML145442)
and Bell 103 (ML145443) specifications. Both devices provide fullâduplex or
halfâduplex 300âbaud data communication over a pair of telephone lines.
They also include a carrier detect circuit for the demodulator section and a
duplexer circuit for direct operation on a telephone line through a simple
transformer.
This Device Offers The Following Performance Features:
⢠ML145442 Compatible with CCITT V.21
⢠ML145443 Compatible with Bell 103
⢠LowâBand and HighâBand BandâPass Filters OnâChip
⢠Simplex, HalfâDuplex, and FullâDuplex Operation
⢠Originate and Answer Mode
⢠Analog Loopback Configuration for Self Test
⢠Hybrid Network Function OnâChip
⢠Carrier Detect Circuit OnâChip
⢠Adjustable Transmit Level and CD Delay Timing
⢠OnâChip Crystal Oscillator (3.579 MHz)
⢠Single +5 V Power Supply Operation
⢠Internal MidâSupply Generator
⢠PowerâDown Mode
⢠Pin Compatible with MM74HC943
⢠Capable of Driving â9 dBm into a 600 W Load
⢠Operating Temperature Range = TA â40° to +85°C
20
1
P DIP 20 = RP
PLASTIC DIP
CASE 738
20
1
SOG 20 = -6P
SOG PACKAGE
CASE 751D
CROSS REFERENCE/ORDERING INFORMATION
PACKAGE
MOTOROLA
LANSDALE
P DIP 20 H
SO 20W
P DIP 20 H
SO 20W
MC145442BP
MC145442BDW
MC145443BP
MC145443BDW
ML145442RP
ML145442-6P
ML145443RP
ML145443-6P
Note: Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from ML to MLE.
PIN ASSIGNMENT
DSI 1
LB 2
CD 3
CDT 4
RxD 5
VDD 6
CDA 7
Xout 8
Xin 9
FB 10
20 TLA
19 VAG
18 Exl
17 TxA
16 RxA1
15 RxA2
14 SQT
13 MODE
12 VSS
11 TxD
Page 1 of 11
www.lansdale.com
Issue bB
|
▷ |