DM74LS245N ,3-STATE Octal Bus TransceiverFeaturesThese octal bus transceivers are designed for asynchro- ■ Bi-Directional bus transceiver in ..
DM74LS245SJX , Octal 3-STATE Bus TransceiverDM74LS245 3-STATE Octal Bus TransceiverAugust 1986Revised March 2000DM74LS2453-STATE Octal Bus Tran ..
DM74LS245WM ,3-STATE Octal Bus TransceiverFeatures YAlternate Military/Aerospace device (54LS245) is avail-YBi-Directional bus transceiver in ..
DM74LS245WMX , Octal 3-STATE Bus TransceiverFeaturesThese octal bus transceivers are designed for asynchro- ■ Bi-Directional bus transceiver in ..
DM74LS247N ,V(cc): 4.75 to 5.25V; BCD to 7-segment decoder/driver with open collector outputsGeneral Description
The 'LS247 has active LOW open-collector outputs guaran-
teed to sink 24 mA ..
DM74LS253N ,TRI-STATE Data Selectors/Multiplexers54LS253/DM54LS253/DM74LS253TRI-STATEDataSelectors/MultiplexersJune198954LS253/DM54LS253/DM74LS253TR ..
DS21Q50L+ ,Quad E1 TransceiverFEATURES The DS21Q50 E1 quad transceiver contains all the Four Complete E1 (CEPT) PCM-30/ISDN-PRI ..
DS21Q50LN ,Quad E1 TransceiverFEATURES The DS21Q50 E1 quad transceiver contains all the Four Complete E1 (CEPT) PCM-30/ISDN-PRI ..
DS21Q55 ,Quad T1/E1/J1 TransceiverAPPLICATIONS: Complete T1 (DS1)/ISDN–PRI/J1 transceiver § Routers functionality § Channel Service U ..
DS21Q552 ,Quad T1 Transceiver (5V/3.3V)DALLAS SEMICONDUCTOR PreliminaryQuad T1/E1 Transceiver (5V) DS21Q552/DS21Q554Quad T1/E1 Transceiver ..
DS21Q554 ,Quad E1 Transceiver (5V/3.3V)DALLAS SEMICONDUCTOR PreliminaryQuad T1/E1 Transceiver (5V) DS21Q552/DS21Q554Quad T1/E1 Transceiver ..
DS21Q554 ,Quad E1 Transceiver (5V/3.3V)FEATURESP• Four (4) Completely Independent T1 or E1 Transceivers In One Small 27mm x 27mm Package • ..
DM74LS245N
3-STATE Octal Bus Transceiver
DM74LS245 3-STATE Octal Bus Transceiver August 1986 Revised March 2000 DM74LS245 3-STATE Octal Bus Transceiver General Description Features These octal bus transceivers are designed for asynchro- � Bi-Directional bus transceiver in a high-density 20-pin nous two-way communication between data buses. The package control function implementation minimizes external timing � 3-STATE outputs drive bus lines directly requirements. � PNP inputs reduce DC loading on bus lines The device allows data transmission from the A Bus to the � Hysteresis at bus inputs improve noise margins B Bus or from the B Bus to the A Bus depending upon the � Typical propagation delay times, port-to-port 8 ns logic level at the direction control (DIR) input. The enable input (G) can be used to disable the device so that the � Typical enable/disable times 17 ns buses are effectively isolated. � I (sink current) OL 24 mA � I (source current) OH −15 mA Ordering Code: Order Number Package Number Package Description DM74LS245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide DM74LS245SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74LS245N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Enable Direction Operation G Control DIR L L B Data to A Bus L H A Data to B Bus HX Isolation H = HIGH Level L = LOW Level X = Irrelevant © 2000 DS006413
