CY74FCT16827T - 20-Bit Buffers/Drivers with 3-State Outputs

The CY74FCT16827T 20-bit buffer/line driver and the CY74FCT162827T 20-bit buffer/line driver provide high-performance bus interface buffering for wide data/address paths or buses carrying parity. These parts can be used as a single 20-bit buffer or two 10-bit buffers. Each 10-bit buffer has a pair of NANDed OE\ for increased flexibility.

This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The CY74FCT16827T is ideally suited for driving high-capacitance loads and low-impedance backplanes.

The CY74FCT162827T has 24-mA balanced output drivers with current-limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for minimal undershoot and reduced ground bounce. The CY74FCT162827T is ideal for driving transmission lines.

• I_off Supports Partial-Power-Down Mode Operation
• Edge-rate control circuitry for significantly improved noise characteristics
• Typical output skew < 250 ps
• ESD > 2000V
• TSSOP (19.6-mil pitch) and SSOP (25-mil pitch) packages
• Industrial temperature range of -40°C to +85°C
• V_CC = 5V ± 10%
• CY74FCT16827T Features:
• 64 mA sink current, 32 mA source current
• Typical V_OLP (ground bounce) <1.0V at V_CC = 5V, T_A = 25°C
• CY74FCT162827T Features:
• Balanced 24 mA output drivers
• Reduced system switching noise
• Typical V_OLP (ground bounce) <0.6V at V_CC = 5V, T_A = 25°C