212x8-DSH-001-B

Mindspeed Technologies

®

April 2007

Mindspeed Proprietary and Confidential

Applications

• Serial Routing Switchers, Production/Master Control Switchers

• Distribution Amplifiers

• Video Tape Recorders, ENG Edit decks, Cameras

• Broadcast video applications

• NLE's, MPEG Encoders/Decoders, format convertors etc.

Standards Compliance

• SMPTE 292M, 259M, 344M

The M21208 and M21218 are high-speed, low-power, low-jitter cable drivers. They are designed to drive serial

digital video data through 75

Ω coaxial cable typically used in SMPTE and DVB-ASI video applications. The

M21218 cable driver is optimized for performance from 143 Mbps up to 1485 Mbps, it has selectable slew rate for

SD-SDI and HD-SDI applications. The M21208 cable driver is optimized for performance from 143 Mbps up to 540

Mbps with SD-SDI slew rates.

The typical output rise/fall time of the M21218 is 100 ps for HD rates. Both devices have a typical set slew rate of

600 ps at SD rates. The default output voltage swing is compliant with SMPTE 292M, 259M and 344M using a

750

Ω ±1% resistor. The M21208 and M21218 are pin compatible, with the exception that the M21208 has no SD/

HD control pin. M21208/M21218 support a maximum single ended output swing of 1600 mVp–p, when configured

appropriately.

Both devices are available in a small outline RoHS compliant package, which is backwards compatible with

standard JEDEC SnPb processes. The M21208 is pin compatible with the GS9068/9068A devices, and the

M21218 is pin compatible with the GS1528/1528A, both support 2.5V and 3.3V operation.

Functional Block Diagram

OUTPUT

BUFFER

RSET

SDI

M21208 /M21218

CABLE DRIVER

INPUT

BUFFER

2.5V - 3.3V and

BIAS CIRCUITRY

AV

DD

SD/HD*

SDO

SDO

SDI

* SD/HD on M21218 only

Features

• HD and SD operation (M21218)

• SD operation (M21208)

• Pin compatible to GS9068/9068A (M21208)

• Pin compatible to GS1528/1528A (M21218)

• 800 mVp–p single ended output swing (typical)

• 1600 mVp–p maximum single ended output swing

• SD/HD Slew Rate control (M21218)

• 2.5V or 3.3V supply

• Extended temperature range: -10 °C to 85 °C

• RoHS package

M21208/M21218

SD and HD/SD-SDI Digital Video Cable Drivers