Fairchild 9400 Family
Developer	Fairchild Semiconductor
Manufacturer	Fairchild Semiconductor
Type	microprocessors
Production	1975
Architecture	4-bit bit-slice
Word size	4-bit "-bit" is not declared as a valid unit of measurement for this property.
Technology	Schottky transistor, Bipolar
Clock	2.4576 MHz
Package	DIP24, CerDIP24

The 9400 Series (officially 4700 Macrologic Series Bipolar Family) was a family of 4-bit bipolar multi-chip bit-slice microprocessor designed by Fairchild Semiconductor. The series was introduced in 1975. Around the same time Fairchild introduced the 4700 series which was a similar family using bipolar technology instead.

2nd Source

This family was 2nd sourced by Signetics.

Members

Family Members
Part	Description
9401	CRC Generator/Checker
9402	FIFO buffer (16x4-bit)
9403	Series/Parallel FIFO (Buffer Memory)
9404	Data Path Switch (DPS)
9405	Microprocessor "ALRS" (Arithmetic Logic Register Stack)
9406	Program Stack (16x4-bit LIFO)
9407	Data Access Register
9408	Microprogram Sequencer
9410	16x4 Clocked RAM (16x4-bit)
9411	CRC Generator/Checker
9414	Data Encryption
9423	FIFO buffer (16x4-bit)

Architecture

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