SDA5649

Features:

*Single-chip receiver for PDC data, broadcast either
in Broadcast Data Service Packet (BDSP) 8/30/2according to CCIR teletext system B, or
in dedicated line no. 16 of the vertical blanking interval(VPS)
*Reception of Unified Date and Time (UDT), Network
   Identification code (NIC), and Short Program Label (SPL)
   broadcast in BDSP8/30/1
*Reception of bytes no.38 through 45 of teletext header rowcontaining clock time
*Low external components count
*On-chip data and sync slicer
*I2C-Bus interface for communication with externalmicrocontroller
*Selection of PDC/VPS operating mode software controlledbyI2C-Bus register
*Pin and software compatible to PDC/VPS DecoderSDA5648
*Supply voltage: 5V±10%
*Video input signal level: 0.7 Vpp to 1.4 Vpp
*Technology: CMOS
*Package: P-DIP-14-3 and P-DSO-20-1
*Operating temperature range: 0 to 70°C

Pinout




Specifications

Parameter	Symbol	Limit Values			Unit	Test Condition
		min.	typ.	max.
Ambient temperature	TA	0		70	°C	in operation
Storage temperature	Tstg	40		125	°C	by storage
Total power dissipation	Ptot			300	mW
Power dissipation per output	PDQ			10	mW
Input voltage	VIM	0.3		6	V
Supply voltage	VDD	0.3		6	V
Thermal resistance	RthSU			80	K/W

Description

The CMOS circuit SDA5649 is intended for use in video cassette recorders to retrieve control data
of the PDC system from the data lines broadcast during the vertical blanking interval of a standard
video signal.

The SDA5649 is devised to handle PDC data transported either in Broadcast Data Service Packet
(BDSP) 8/30 format 2 (bytes no. 13 through 25) of CCIR teletext system B or in the dedicated data
line no. 16 in the case of VPS.