MAX9326 1:9 Differential LVPECL/LVECL/HSTL Clock and Data Driver

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The MAX9326 low-skew, 1:9 differential driver features extremely low output-to-output skew (50ps max) and part-to-part skew (225ps max). These features make the device ideal for clock and data distribution across a backplane or board. The device repeats an HSTL or LVECL/LVPECL differential input at nine differential outputs. Outputs are compatible with LVECL and LVPECL, and directly drive 50Ω terminated transmission lines.

The differential inputs can be configured to accept a single-ended signal when the unused complementary input is connected to the on-chip reference output voltage V_BB. All inputs have internal pulldown resistors to V_EE. The internal pulldowns and a fail-safe circuit ensure differential low default outputs when the inputs are left open or at V_EE.

The MAX9326 operates over a +2.375V to +3.8V supply range for interfacing to differential HSTL and LVPECL signals. This allows high-performance clock or data distribution in systems with a nominal +2.5V or +3.3V supply. For LVECL operation, the device operates with a -2.375V to -3.8V supply.

The MAX9326 is offered in 28-lead PLCC and space-saving 28-lead QFN packages. The MAX9326 is specified for operation from -40°C to +85°C.

Key Features Applications/Uses

50ps (max) Output-to-Output Skew
1.5ps_RMS (max) Random Jitter
Guaranteed 300mV Differential Output at 1.0GHz
+2.375V to +3.8V Supplies for Differential HSTL/LVPECL
-2.375V to -3.8V Supplies for Differential LVECL
On-Chip Reference for Single-Ended Inputs
Outputs Low for Inputs Open or at V_EE
Pin Compatible with MC100LVE111

Low-Jitter Data Repeater
Precision Clock Distribution

Key Specifications: High-Speed Interconnect (Differential Signaling)

Part Number

Features

Rx Signal Type

Tx Signal Type

Functions

Number of Rx

Number of Tx

Propagation Delay (max) (ps)

Supply Voltage (V)

Random Jitter (max) (ps RMS)

Deterministic Jitter (max) (ps pp)

Channel-to-Channel Skew (max) (ps)

Output Transition Time (max) (ps)

ESD Protection (±kV)

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

MAX9326

•	Fail-Safe Inputs

HSTL
LVECL
LVPECL

LVECL
LVPECL

•	Fan-Out Buffer

650

3.3

1.5

450

Yes

PLCC/28

158

See All High-Speed Interconnect (Differential Signaling) (131)

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Document Ref.: 19-2538; Rev 2; 2003-03-21
This page last modified: 2007-07-16