DM74ALS257MX ,3-STATE Quad 1-of-2 Line Data Selector/MultiplexerFeaturesThese data selectors/multiplexers contain inverters and ■ Switching specifications at 50 pF ..
DM74ALS257N ,3-STATE Quad 1-of-2 Line Data Selector/MultiplexerFeaturesThese data selectors/multiplexers contain inverters and ■ Switching specifications at 50 pF ..
DM74ALS257N ,3-STATE Quad 1-of-2 Line Data Selector/MultiplexerDM74ALS257 • DM74ALS258 3-STATE Quad 1-of-2-Line Data Selector/MultiplexerApril 1984Revised Februar ..
DM74ALS258M ,3-STATE Quad 1-of-2 Line Data Selector/Multiplexer (Inverting)DM74ALS257 • DM74ALS258 3-STATE Quad 1-of-2-Line Data Selector/MultiplexerApril 1984Revised Februar ..
DM74ALS273MSA ,Octal D-Type Edge-Triggered Flip-Flops with Clear InputsDM74ALS273 Octal D-Type Edge-Triggered Flip-Flop with ClearApril 1984Revised February 2000DM74ALS27 ..
DM74ALS273N ,Octal D-Type Edge-Triggered Flip-Flops with Clear InputsFeaturesThese monolithic, positive-edge-triggered flip-flops utilize ■ Switching specifications at ..
DS1832 ,3.3 Volt MicroMonitor ChipPIN DESCRIPTIONPBRST - Pushbutton Reset InputTD - Time Delay SetTOL - Selects 10% or 20% V DetectCC ..
DS1832S ,3.3 Volt MicroMonitor ChipPIN DESCRIPTIONPBRST - Pushbutton Reset InputTD - Time Delay SetTOL - Selects 10% or 20% V DetectCC ..
DS1832S+ ,3.3 Volt MicroMonitor ChipFEATURES PIN ASSIGNMENT Halts and restarts an out-of-controlVCCPBRST 1 8microprocessor2TD 7 ST Ho ..
DS1832S+T&R ,3.3 Volt MicroMonitor ChipFEATURES PIN ASSIGNMENT Halts and restarts an out-of-controlVCCPBRST 1 8microprocessor2TD 7 ST Ho ..
DS1833 ,5V EconoResetPIN DESCRIPTIONPIN 1 GroundPIN 2 ResetPIN 3 VCCPIN 4 Ground (SOT-223 only)DESCRIPTIONThe DS1833 Eco ..
DS1833-10 ,5V EconoResetPIN DESCRIPTIONPIN 1 GROUNDPIN 2 RESETPIN 3 VCCPIN 4 GROUND (SOT-223 ONLY)DESCRIPTIONThe DS1233D Ec ..
DM74ALS257M-DM74ALS257MX-DM74ALS257N-DM74ALS258M
3-STATE Quad 1-of-2 Line Data Selector/Multiplexer
DM74ALS257 • DM74ALS258 3-STATE Quad 1-of-2-Line Data Selector/Multiplexer April 1984 Revised February 2000 DM74ALS257 • DM74ALS258 3-STATE Quad 1-of-2-Line Data Selector/Multiplexer General Description Features These data selectors/multiplexers contain inverters and � Switching specifications at 50 pF drivers to supply full on-chip data selection to the four 3- � Switching specifications guaranteed over full tempera- STATE outputs that can interface directly with data lines of ture and V range CC bus-organized systems. A 4-bit word selected from one of � Advanced oxide-isolated, ion-implanted Schottky TTL two sources is routed to the four outputs. The process DM74ALS257 presents true data whereas the � Functionally and pin for pin compatible with Schottky DM74ALS258 presents inverted data to minimize propaga- and low power Schottky TTL counterpart tion delay time. � Improved AC performance over Schottky and low power This 3-STATE output feature means that n-bit (paralleled) Schottky counterparts data selectors with up to 258 sources can be implemented for data buses. It also permits the use of standard TTL reg- � 3-STATE buffer-type outputs drive bus lines directly isters for data retention throughout the system. � Expand any data input point � Multiplex dual data buses � General four functions of two variables (one variable is common) � Source programmable counters Ordering Code: Order Number Package Number Package Description DM74ALS257M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74ALS257SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74ALS257N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide DM74ALS258M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74ALS258N N16E 16-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 Inputs Output Y Output Select A B DM74ALS257 DM74ALS258 Control HX X X Z Z LL L X L H LL H X H L LH X L L H LH X H H L H = HIGH Level L = LOW Level X = Don't Care Z = High Impedance (OFF) © 2000 DS006227
