CDCLVD1204RGTT屬于集成電路（IC）的時(shí)鐘緩沖器驅(qū)動(dòng)器。由美國(guó)德州儀器公司制造生產(chǎn)的CDCLVD1204RGTT時(shí)鐘緩沖器，驅(qū)動(dòng)器時(shí)鐘緩沖器和驅(qū)動(dòng)器集成電路產(chǎn)品族中的產(chǎn)品用于幫助信號(hào)在系統(tǒng)中傳輸，常用作頻率/時(shí)間參考信號(hào)，以同步系統(tǒng)內(nèi)的活動(dòng)。盡管這些器件最常用到的功能就是緩沖（即，為使信號(hào)不受驅(qū)動(dòng)負(fù)載的影響而從某個(gè)信號(hào)源復(fù)制信號(hào)），但是該產(chǎn)品族中的某些器件還能執(zhí)行其他功能，例如選擇性改變緩沖信號(hào)路徑、按某個(gè)整數(shù)值分割信號(hào)頻率，或進(jìn)行所用電信號(hào)格式轉(zhuǎn)換。

1 Features

1? 2:4 Differential Buffer

? Low Additive Jitter: <300 fs RMS in 10-kHz to

20-MHz

? Low Output Skew of 20 ps (Maximum)

? Universal Inputs Accept LVDS, LVPECL, and

LVCMOS

? Selectable Clock Inputs Through Control Pin

? 4 LVDS Outputs, ANSI EAI/TIA-644A Standard

Compatible

? Clock Frequency: Up to 800 MHz

? Device Power Supply: 2.375 V to 2.625 V

? LVDS Reference Voltage, VAC_REF, Available for

Capacitive Coupled Inputs

? Industrial Temperature Range: –40°C to 85°C

? Packaged in 3 mm × 3 mm, 16-Pin VQFN (RGT)

? ESD Protection Exceeds 3 kV HBM, 1 kV CDM

2 Applications

? Telecommunications and Networking

? Medical Imaging

? Test and Measurement Equipment

? Wireless Communications

? General Purpose Clocking

3 Description

The CDCLVD1204 clock buffer distributes one of two

selectable clock inputs (IN0 and IN1) to 4 pairs of

differential LVDS clock outputs (OUT0 through OUT3)

with minimum skew for clock distribution. The

CDCLVD1204 can accept two clock sources into an

input multiplexer. The inputs can either be LVDS,

LVPECL, or LVCMOS.

The CDCLVD1204 is specifically designed for driving

50-Ω transmission lines. In case of driving the inputs

in single ended mode, the appropriate bias voltage,

VAC_REF, must be applied to the unused negative

input pin.

The IN_SEL pin selects the input which is routed to

the outputs. If this pin is left open, it disables the

outputs (static). The part supports a fail safe function.

The device incorporates an input hysteresis which

prevents random oscillation of the outputs in the

absence of an input signal.

The device operates in 2.5-V supply environment and

is characterized from –40°C to 85°C (ambient

temperature). The CDCLVD1204 is packaged in

small, 16-pin, 3-mm × 3-mm VQFN package.