TK74C3893 - Futurebus Transceiver

General Description

The TK74C3893 is a replacement for the Philips N74F3893A and NSC DS3893A Quad Futurebus transceivers.

The TK74C3893 consists of 4 bidirectional Futurebus transceivers. Directional control is provided through a receive enable and data bus enable pins.

Pin	Name	Type	Function
1	Vcc	Supply	5 Volt Supply
2	D0	Input	Data 0 Input
3	R0	Output	Receive Data 0 Output
4	D1	Input	Data 1 Input
5	R1	Output	Receive Data 1 Output
6	Logic Gnd	Supply	Ground for internal logic
7	D2	Input	Data 2 Input
8	R2	Output	Receive Data 2 Output
9	D3	Input	Data 3 Input
10	R3	Output	Receive Data 3 Output
11	DE	Input	Date Enable - 1 enables Futurebus
12	REn	Input	Receive Enable - 0 enables receiver
13	Bus Gnd	Supply	Ground for Futurebus
14	I/O 3	Bidirectional	Futurebus Data 3
15	I/O 2	Bidirectional	Futurebus Data 2
16	Bus Gnd	Supply	Ground for Futurebus
17	I/O 1	Bidirectional	Futurebus Data 1
18	I/O 0	Bidirectional	Futurebus Data 0
19	Bus Gnd	Supply	Ground for Futurebus
20	BG Gnd	Supply	Ground for band gap reference

Features

Quad backplane transceiver
Replaces Philips N74F3893A and NSC DS3893A Drivers
Drives heavily loaded backplanes
Futurebus drivers sink 100 mA
Built in band gap reference
Glitch-free power-up and power-down on all outputs
CMOS technology for low power
Available in 20 pin PLCC
RoHS Compliant

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Minimum Order Quantity

We will continue to sell the TK74C3893 parts with a MOQ of 100 units as long as we have inventory in stock. Once that inventory is gone, then minimum order quantities will increase to 5000 parts per order.

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Microprocessors

Main Office

Tekmos, Inc.
14121 Highway 290 West
Building #15
Austin, TX 78737
Phone: (512) 342-9871