© Semiconductor Components Industries, LLC, 2006
November, 2006 − Rev. 8
1 Publication Order Number:
MC10E446/D
MC10E446, MC100E446
5VECL 4-Bit Parallel/Serial
Converter
Description
The MC10E/100E446 is an integrated 4-bit parallel to serial data
converter. The device is designed to operate for NRZ data rates of up to
1.3 Gb/s. The chip generates a divide by 4 and a divide by 8 clock for
both 4-bit conversion and a two chip 8-bit conversion function. The
conversion sequence was chosen to convert the parallel data into a serial
stream from bit D0 to D3. A serial input is provided to cascade two
E446 devices for 8 bit conversion applications. Note that the serial
output data clocks off of the negative input clock transition.
The SYNC input will asynchronously reset the internal clock
circuitry. This pin allows the user to reset the internal clock conversion
unit and thus select the start of the conversion process.
The MODE input is used to select the conversion mode of the device.
With the MODE input LOW, or open, the device will function as a 4-bit
converter. When the mode input is driven HIGH the internal load clock
will change on every eighth clock cycle thus allowing for an 8-bit
conversion scheme using two E446’s. When cascaded in an 8-bit
conversion scheme the devices will not operate at the 1.3 Gb/s data rate
of a single device. Refer to the applications section of this data sheet for
more information on cascading the E446.
The V
BB
pin, an internally generated voltage supply, is available to
this device only. For single-ended input conditions, the unused
differential input is connected to V
BB
as a switching reference voltage.
V
BB
may also rebias AC coupled inputs. When used, decouple V
BB
and
V
CC
via a 0.01 mF capacitor and limit current sourcing or sinking to
0.5 mA. When not used, V
BB
should be left open.
The 100 Series contains temperature compensation.
Features
• On Chip Clock ÷4 and ÷8
• 1.5 Gb/s Typical Data Rate Capability
• Differential Clock and Serial Inputs
• V
BB
Output for Single-ended Input Applications
• Asynchronous Data Synchronization
• Mode Select to Expand to 8 Bits
• PECL Mode Operating Range: V
CC
= 4.2 V to 5.7 V
with V
EE
= 0 V
• NECL Mode Operating Range: V
CC
= 0 V
with V
EE
= −4.2 V to −5.7 V
• Internal Input 50 kW Pulldown Resistors
• ESD Protection: Human Body Model; > 2 kV,
Machine Model; > 100 V
• Meets or Exceeds JEDEC Spec EIA/JESD78 IC
Latchup Test
• Flammability Rating: UL 94 V−0 @ 0.125 in,
Oxygen Index: 28 to 34
• Transistor Count = 525 devices
• Moisture Sensitivity Level: Pb = 1; Pb−Free = 3
For Additional Information, see Application Note
AND8003/D
• Pb−Free Packages are Available*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
MARKING DIAGRAM*
xxx = 10 or 100
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
PLCC−28
FN SUFFIX
CASE 776
http://onsemi.com
*For additional marking information, refer to
Application Note AND8002/D.
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
ORDERING INFORMATION
MCxxxE446FNG
AWLYYWW
128
