IDT2309B Datasheet, PDF (1/10 Pages) Integrated Device Technology – 3.3V ZERO DELAY CLOCK BUFFER

IDT2309B
3.3V ZERO DELAY CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
3.3V ZERO DELAY
CLOCK BUFFER
IDT2309B
FEATURES:
• Phase-Lock Loop Clock Distribution
• 10MHz to 133MHz operating frequency
• Distributes one clock input to one bank of five and one bank of
four outputs
• Separate output enable for each output bank
• Output Skew < 250ps
• Low jitter <175 ps cycle-to-cycle
• 50ps typical cycle-to-cycle jitter (15pF, 66MHz)
• IDT2309B-1 for Standard Drive
• IDT2309B-1H for High Drive
• No external RC network required
• Operates at 3.3V VDD
• Available in SOIC and TSSOP packages
DESCRIPTION:
The IDT2309B is a high-speed phase-lock loop (PLL) clock buffer,
designed to address high-speed clock distribution applications. The zero
delay is achieved by aligning the phase between the incoming clock and
the output clock, operable within the range of 10 to 133MHz.
The IDT2309B is a 16-pin version of the IDT2305B. The IDT2309B
accepts one reference input, and drives two banks of four low skew clocks.
The -1H version of this device operates at up to 133MHz frequency and
has higher drive than the -1 device. All parts have on-chip PLLs which lock
to an input clock on the REF pin. The PLL feedback is on-chip and is
obtained from the CLKOUT pad. In the absence of an input clock, the
IDT2309B enters power down, and the outputs are tri-stated. In this mode,
the device will draw less than 25µA.
The IDT2309B is characterized for both Industrial and Commercial
operation.
FUNCTIONAL BLOCK DIAGRAM
1
PLL
REF
S2 ⁸
S1 ⁹
Control
Logic
16
CLKOUT
2
CLKA1
3
CLKA2
14
CLKA3
15
CLKA4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
1
c 2010 Integrated Device Technology, Inc.
6
CLKB1
7
CLKB2
10
CLKB3
11
CLKB4
MAY 2010
DSC 6996/3