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CY2304SXI-1T

3.3V zero delay clock buffer, 4-out, PLL, 10-133MHz, 90ps jitter, SOIC-8

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Pieza del fabricante：

CY2304SXI-1T

Paquete：

SOIC-8 (150-mil, 3.9 x 4.9 mm)

Descripción

Productos

The CY2304SXI-1T is a 3.3V zero delay clock buffer from Infineon Technologies (formerly Cypress) with 4 outputs, on-chip PLL, 10-133 MHz operating range, and 90 ps typical jitter in an 8-pin SOIC package. The -1 configuration provides 1:1 output-to-reference frequency ratio.

Especificaciones

Tipo	Zero Delay Clock Buffer
Number of Outputs	4 (2 banks of 2)
Configuración	-1: All outputs = Reference frequency
Operating Frequency	10 MHz to 133 MHz
Input-Output Skew	< 250 ps
Output-to-Output Skew	< 200 ps
Cycle-to-Cycle Jitter	90 ps typical (66 MHz, 15 pF)
Tensión de alimentación	3.0 V to 3.6 V
Supply Current	45 mA max (100 MHz, unloaded)
Power-Down Current	25 µA max
Temperatura de funcionamiento	-40°C to +85°C (Industrial)
Paquete	SOIC-8 (150-mil)

Características

Zero input-output propagation delay via on-chip PLL
Adjustable delay via capacitive load on FBK pin
Two banks of two low-skew outputs each
90 ps typical cycle-to-cycle jitter
Power-down mode: outputs three-stated, PLL off, <25 µA
Space-saving 8-pin SOIC package
Multiple device synchronization (<500 ps device-to-device skew)

Aplicaciones

PC and workstation clock distribution
Data communications equipment
Telecom systems
High-performance clock trees
Embedded processor clocking

Introducción del producto:CY2304SXI-1T Presentación del producto

The CY2304SXI-1T is a 3.3V zero delay clock buffer from Infineon Technologies designed to distribute high-speed clocks in PC, workstation, datacom, telecom, and other high-performance applications. It features an on-chip phase-locked loop (PLL) that locks to the input clock on the REF pin, with feedback driven into the FBK pin from one of the outputs. The input-to-output skew is guaranteed less than 250 ps, and output-to-output skew is guaranteed less than 200 ps. The -1T configuration provides all four outputs at the reference frequency with 1:1 ratio. The device enters power-down mode when no rising edges are detected on REF, three-stating all outputs and reducing current to below 25 µA.

Principio de funcionamiento:CY2304SXI-1T Principio de funcionamiento

The CY2304 uses an on-chip PLL to achieve zero input-to-output propagation delay. The PLL consists of a phase detector, loop filter, and voltage-controlled oscillator (VCO). The phase detector compares the REF input with the FBK feedback signal and adjusts the VCO to minimize phase error. The feedback path must be routed from one of the outputs back to the FBK pin, which effectively includes the output buffer delay in the PLL feedback loop. This means the PLL compensates for the output buffer propagation delay, achieving near-zero delay from REF to the outputs. The delay can be fine-tuned by adding capacitive loading on the FBK pin, which slightly increases the feedback path delay and correspondingly advances the output timing. Multiple CY2304 devices can be synchronized by driving them from the same REF clock, with device-to-device skew guaranteed below 500 ps.

Descripción de la clavija:CY2304SXI-1T Definición y funciones de las clavijas

Pin	Nombre	Tipo	Descripción
1	REF	Entrada	Reference clock input (LVCMOS/LVTTL)
2	CLKA1	Salida	Bank A output 1
3	CLKA2	Salida	Bank A output 2
4	GND	Potencia	Suelo
5	CLKB1	Salida	Bank B output 1
6	CLKB2	Salida	Bank B output 2
7	FBK	Entrada	PLL feedback input (connect from CLKA1 or CLKB1)
8	VDD	Potencia	Supply voltage (3.3V)

Application Scenarios:In which products and applications isCY2304SXI-1T usado

PC Clock Distribution: Zero delay buffer distributes motherboard clocks to CPU, chipset, and memory with minimal skew
Datacom Equipment: 90 ps jitter performance ensures timing margins in high-speed networking clock trees
Multi-Board Systems: Device-to-device skew below 500 ps enables synchronized clocking across multiple boards
Processor Clocking: Low-skew 4-output buffer provides synchronous clocks to multi-core processors and peripherals
Power-Managed Systems: Automatic power-down when REF clock stops reduces standby power to below 25 µA

Alternative Models:What chips are recommended as replacements for CY2304SXI-1T

Modelo	Fabricante	Diferencia clave	Paquete	Specs
CY2304SXI-2T	Infineon	Configurable ÷2/×2 output frequencies	-	-
CY2305SC-1	Infineon	Single bank, 5 outputs, commercial temp	-	-
PI49FCT3807QE	Diodos Inc	1:10 clock buffer, similar function	-	-
ICS557-03	Renesas	Zero delay buffer with 6 outputs	-	-
NB3N5573	onsemi	3.3V zero delay buffer, 5 outputs	-	-