Z53C8003PSG

Overview

The Z53C8003PSG is a CMOS SCSI interface integrated circuit manufactured by Zilog, designed to implement the SCSI protocol as defined by ANSI standards. It operates at a data transfer rate of 3 MB/sec and functions within a supply voltage range of 4.75 V to 5.25 V. The device draws a typical operating current of 15 mA and supports an extended commercial temperature range from 0°C to +70°C. It is housed in a 48-pin Dual In-line Package (DIP) suitable for through-hole mounting. This component belongs to the Z53C80 series of interface ICs.

Feature Summary

• Implements standard SCSI protocol for high-speed data communication
• CMOS technology ensures low power consumption during operation
• Supports standard 5V logic levels for system integration

Applications

• SCSI controller implementation in legacy computer systems
• Peripheral interface design for storage devices
• Industrial control systems requiring SCSI connectivity

Procurement Notes

This component is officially classified as obsolete or end-of-life by the manufacturer. Availability is restricted to remaining stock from distributors or third-party suppliers. Buyers must verify the authenticity and condition of available units carefully. Lead times may be unpredictable due to limited inventory. Alternative solutions should be evaluated for long-term projects to ensure supply chain stability and compatibility with modern manufacturing processes.

Selection Notes

Select this part only for maintenance of existing designs requiring specific 48-pin DIP packaging and SCSI I functionality. Verify that the host system supports the required 5V logic levels and 3 MB/sec bandwidth. Consider the physical size constraints of the DIP-48 package against PCB layout requirements. Ensure thermal management meets the specified 0°C to +70°C operating range. Confirm that the target application does not require higher speed interfaces or surface-mount packages offered by newer generations.

Part Context

The Z53C8003PSG is part of the Z53C80 series, which includes various SCSI controller variants differentiated by package type and pin configuration. Other members include PLCC, QFP, and LQFP packages such as the Z53C8003VSG and Z53C8003FSC. This specific PSG suffix denotes the 48-pin DIP format. The series was designed to provide robust SCSI connectivity for microprocessor-based systems before the widespread adoption of faster serial interfaces.

Replacement Considerations

• Z53C8003VSG
• Z53C8003FSC
• Z53C8003ASG