74F657 ,Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and TRI-STATE OutputsFeaturesY300 Mil 24-pin slimline DIPThe ’F657 contains eight non-inverting buffers withYTRI-STATEÉ ..
74F657SC , Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and 3-STATE OutputsFunctional DescriptionThe Transmit/Receive (T/R) input determines the direction select (ODD/EVEN). ..
74F657SPC ,Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and 3-STATE OutputsFunctional DescriptionThe Transmit/Receive (T/R) input determines the direction select (ODD/EVEN). ..
74F673ASPC ,16-Bit Serial-In Serial/Parallel-Out Shift RegisterFeaturesThe 74F673A contains a 16-bit serial-in, serial-out shift
74F657
Octal Bidirectional Transceiver with 8-Bit Parity Generator/Checker and TRI-STATE Outputs
TL/F/9584
54F/74F657
Octal
Bidirectional
Transceiver
with
8-Bit
Parity
Generator/Checker
and
TRI-STATE
Outputs
December 1994
54F/74F657 Octal Bidirectional Transceiver
with 8-Bit Parity Generator/Checker
and TRI-STATEÉ Outputs
General Description
The ’F657 contains eight non-inverting buffers with
TRI-STATEÉ outputsandan 8-bit parity generator/checker.is intendedfor bus-orientedapplications.The buffershave guaranteed currentsinking capability of24mA(20mAmil)theA portand64mA(48mAmil)attheB port.
Features 300Mil 24-pin slimlineDIP Combines ’F245and ’F280A functionsinone package TRI-STATE outputsB Outputs sink64mA(48mAmil)12mA source current,B side Input diodesfor termination effects
Commercial Military Package Package DescriptionNumber
74F657SPC N24C 24-Lead (0.300× Wide)MoldedDual-In-Line
54F657SDM (Note2) J24F 24-Lead (0.300× Wide)Ceramic Dual-In-Line
75F657SC (Note1) M24B 24-Lead (0.300× Wide)MoldedSmallOutline, JEDEC
54F657FM (Note2) W24C 24-Lead Cerpack
54F657LM (Note2) E28A 24-Lead CeramicLeadlessChip Carrier, TypeC
Note1: Devicesalsoavailablein13×reel.Use suffixeSCX.
Note2: Military grade devicewith environmentaland burn-inprocessing.Use suffixe DMQB, FMQBand LMQB.
Logic Symbols
IEEE/IEC
TL/F/9584–5
TL/F/9584–1
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
C1995National SemiconductorCorporation RRD-B30M75/PrintedinU.S.A.
