CBTW28DD14AETJ

Overview

The CBTW28DD14AETJ is a 14-bit bus switch and multiplexer designed for 1.5 V or 1.8 V supply voltage operation, supporting POD_12, SSTL_12, SSTL_135, SSTL_15, and SSTL_18 signaling standards. It features a 1:2 switch or 2:1 multiplex topology with bidirectional operation across all 14 bits simultaneously. The device utilizes NXP proprietary high-speed switch architecture to provide a bandwidth of 2.5 GHz, low ON insertion loss, and very low propagation delay of 80 ps typical. It operates within an ambient temperature range of -10 °C to +85 °C and is housed in a TFBGA48 package measuring 4.5 mm x 4.5 mm.

Feature Summary

• Supports DDR2, DDR3, and DDR4 memory bus systems with multiple signaling standards
• Provides high-bandwidth switching with minimal insertion loss and crosstalk
• Features non-directional FET switches allowing flexible signal routing
• Includes CMOS-compatible select and enable inputs for simple control

Applications

• DDR2/DDR3/DDR4 memory bus systems
• Systems requiring high-speed multiplexing

Procurement Notes

Verify the specific ordering suffix 'J' corresponds to the reel packing method as documented in the official datasheet. Confirm that the Cu-OSP leadframe variant matches the design requirements. Ensure the operating temperature range of -10 °C to +85 °C aligns with the system environment. Cross-reference the TFBGA48 package dimensions for board layout compatibility.

Selection Notes

Select this component when designing circuits requiring 14-bit wide bus switching or multiplexing at frequencies up to 2.5 GHz. Ensure the power supply voltage is strictly maintained between 1.4 V and 2.0 V. Verify that the CMOS input levels for SEL and EN are compatible with the system logic voltages. Consider the thermal characteristics and ESD robustness exceeding 3 kV HBM for handling requirements.

Part Context

The CBTW28DD14AETJ belongs to the CBTW28DD14 family of 14-bit bus switches. The 'AETJ' suffix denotes the specific package type (TFBGA48), leadframe material (Cu-OSP), and packing method (Reel). This part is distinct from other variants like the standard ET version which may have different leadframe materials but identical electrical performance.

Replacement Considerations

Direct substitutes within the same family include the CBTW28DD14ET, which shares identical electrical specifications but differs in leadframe material and potentially packing configuration. No other cross-family replacements are officially documented.