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SY10E446_06

Description
4-BIT PARALLEL-TO-SERIAL CONVERTER
File Size83KB,9 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
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SY10E446_06 Overview

4-BIT PARALLEL-TO-SERIAL CONVERTER

Micrel, Inc.
4-BIT PARALLEL-TO-SERIAL
CONVERTER
SY10E446
SY100E446
SY10E446
SY100E446
FEATURES
s
On-chip clock
÷
4 and
÷
8
s
Extended 100E V
EE
range of –4.2V to –5.5V
s
s
s
s
1.6Gb/s typical data rate capability
Differential clock and serial inputs
VBB output for single-ended use
Asynchronous data synchronization
DESCRIPTION
The SY10/100E446 are integrated 4-bit parallel-to-
serial data converters. These devices are designed to
operate for NRZ data rates of up to a minimum of 1.3Gb/
s. The chips generate 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 D
0
to D
3
. A serial input is provided to cascade
two E446 devices for 8-bit conversion applications.
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 E446s. When cascaded in
an 8-bit conversion scheme, the devices will not operate
at the 1.3Gb/s data rate of a single device. Refer to the
applications section of this data sheet for more information
on cascading the E446.
For lower data rate applications, a V
BB
reference
voltage is supplied for single-ended inputs. When
operating at clock rates above 500MHz, differential input
signals are recommended. For single-ended inputs, the
V
BB
pin is tied to the inverting differential input and
bypassed via a 0.01µF capacitor. The V
BB
provides the
switching reference for the input differential amplifier. The
V
BB
can also be used to AC couple an input signal.
s
Mode select to expand to 8 bits
s
Internal 75K
input pulldown resistors
s
Fully compatible with Motorola MC10E/100E446
s
Available in 28-pin PLCC package
PIN NAMES
Pin
SIN, SIN
D
0
– D
3
SOUT, SOUT
CLK, CLK
CL/4, CL/4
CL/8, CL/8
MODE
SYNC
V
CCO
Function
Differential Serial Data Input
Parallel Data Input
Differential Serial Data Output
Differential Clock Input
Differential 4 Clock Output
Differential 8 Clock Output
Conversion Mode, 4-bit/8-bit
Conversion Synchronizing Input
V
CC
to Output
M9999-032206
hbwhelp@micrel.com or (408) 955-1690
1
Rev.: F
Amendment: /0
Issue Date: March 2006

SY10E446_06 Related Products

SY10E446_06 SY100E446 SY10E446 SY10E446JC SY10E446JCTR SY10E446JZTR SY100E446JZTR SY100E446JCTR SY100E446JC
Description 4-BIT PARALLEL-TO-SERIAL CONVERTER 4-BIT PARALLEL-TO-SERIAL CONVERTER 4-BIT PARALLEL-TO-SERIAL CONVERTER 4-BIT PARALLEL-TO-SERIAL CONVERTER 4-BIT PARALLEL-TO-SERIAL CONVERTER 4-BIT PARALLEL-TO-SERIAL CONVERTER 4-BIT PARALLEL-TO-SERIAL CONVERTER 4-BIT PARALLEL-TO-SERIAL CONVERTER 4-BIT PARALLEL-TO-SERIAL CONVERTER
Is it Rohs certified? - - - incompatible incompatible conform to conform to incompatible incompatible
Maker - - - Microchip Microchip Microchip Microchip Microchip Microchip
package instruction - - - PLASTIC, LCC-28 PLASTIC, LCC-28 QCCJ, QCCJ, PLASTIC, LCC-28 PLASTIC, LCC-28
Reach Compliance Code - - - _compli _compli compli compli _compli _compli
Other features - - - ON-CHIP CLOCK DIVIDE BY 4 & 8; DIFFERENTIAL CLOCK & SERIAL INPUT & OUTPUT ON-CHIP CLOCK DIVIDE BY 4 & 8; DIFFERENTIAL CLOCK & SERIAL INPUT & OUTPUT SISO OPERATION ALSO AVAILABLE SISO OPERATION ALSO AVAILABLE SISO OPERATION ALSO AVAILABLE SISO OPERATION ALSO AVAILABLE
Counting direction - - - RIGHT RIGHT RIGHT RIGHT RIGHT RIGHT
series - - - 10E 10E 10E 100E 100E 100E
JESD-30 code - - - S-PQCC-J28 S-PQCC-J28 S-PQCC-J28 S-PQCC-J28 S-PQCC-J28 S-PQCC-J28
JESD-609 code - - - e0 e0 e3 e3 e0 e0
Logic integrated circuit type - - - PARALLEL IN SERIAL OUT PARALLEL IN SERIAL OUT PARALLEL IN SERIAL OUT PARALLEL IN SERIAL OUT PARALLEL IN SERIAL OUT PARALLEL IN SERIAL OUT
Number of digits - - - 4 4 4 4 4 4
Number of functions - - - 1 1 1 1 1 1
Number of terminals - - - 28 28 28 28 28 28
Maximum operating temperature - - - 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Output polarity - - - TRUE TRUE COMPLEMENTARY COMPLEMENTARY COMPLEMENTARY COMPLEMENTARY
Package body material - - - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
Package shape - - - SQUARE SQUARE SQUARE SQUARE SQUARE SQUARE
Package form - - - CHIP CARRIER CHIP CARRIER CHIP CARRIER CHIP CARRIER CHIP CARRIER CHIP CARRIER
propagation delay (tpd) - - - 1.7 ns 1.7 ns 1.7 ns 1.7 ns 1.7 ns 1.7 ns
Certification status - - - Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
surface mount - - - YES YES YES YES YES YES
technology - - - ECL ECL ECL ECL ECL ECL
Temperature level - - - OTHER OTHER OTHER OTHER OTHER OTHER
Terminal surface - - - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15)
Terminal form - - - J BEND J BEND J BEND J BEND J BEND J BEND
Terminal location - - - QUAD QUAD QUAD QUAD QUAD QUAD
Trigger type - - - NEGATIVE EDGE NEGATIVE EDGE NEGATIVE EDGE NEGATIVE EDGE NEGATIVE EDGE NEGATIVE EDGE
minfmax - - - 1300 MHz 1300 MHz 1300 MHz 1300 MHz 1300 MHz 1300 MHz

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