Octal Bidirectional Transceiver
54F 74F657 Octal Bidirectional Transceiver with 8-Bit Parity Generator Checker and TRI-STATE Outputs
Obsolete
December...
Description
54F 74F657 Octal Bidirectional Transceiver with 8-Bit Parity Generator Checker and TRI-STATE Outputs
Obsolete
December 1994
54F 74F657 Octal Bidirectional Transceiver with 8-Bit Parity Generator Checker and TRI-STATE Outputs
General Description
The ’F657 contains eight non-inverting buffers with TRI-STATE outputs and an 8-bit parity generator checker It is intended for bus-oriented applications The buffers have a guaranteed current sinking capability of 24 mA (20 mA mil) at the A port and 64 mA (48 mA mil) at the B port
Features
Y 300 Mil 24-pin slimline DIP Y Combines ’F245 and ’F280A functions in one package Y TRI-STATE outputs Y B Outputs sink 64 mA (48 mA mil) Y 12 mA source current B side Y Input diodes for termination effects
Commercial 74F657SPC
75F657SC (Note 1)
Military
54F657SDM (Note 2) 54F657FM (Note 2) 54F657LM (Note 2)
Package Number N24C J24F M24B W24C E28A
Package Description
24-Lead (0 300 Wide) Molded Dual-In-Line 24-Lead (0 300 Wide) Ceramic Dual-In-Line 24-Lead (0 300 Wide) Molded Small Outline JEDEC 24-Lead Cerpack 24-Lead Ceramic Leadless Chip Carrier Type C
Note 1 Devices also available in 13 reel Use suffix e SCX Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Logic Symbols
IEEE IEC
TL F 9584 – 1
TL F 9584 – 5
TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9584
RRD-B30M75 Printed in U S A
Connection Diagrams
Pi...
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