DatasheetsPDF.com

HD74LS257P

Renesas
Part Number HD74LS257P
Manufacturer Renesas
Description Quadruple 2-line-to-1-line Data Selectors/Multiplexers
Published Jul 25, 2021
Detailed Description HD74LS257 Quadruple 2-line-to-1-line Data Selectors / Multiplexers (with not inverted 3-state outputs) REJ03D0469–0300 ...
Datasheet PDF File HD74LS257P PDF File

HD74LS257P
HD74LS257P


Overview
HD74LS257 Quadruple 2-line-to-1-line Data Selectors / Multiplexers (with not inverted 3-state outputs) REJ03D0469–0300 Rev.
3.
00 Jul.
15.
2005 This multiplexer features three-state outputs that can interface directly with and drive data lines of bus-organized systems.
With all but one of the common outputs disabled (at a high-impedance state) the low impedance of the single enabled output will drive the bus line to a high or low logic level.
To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the outputenable circuitry is designed such that the output disable times are shorter than the output enable times.
Features • Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation HD74LS257P DILP-16 pin PRDP0016AE-B (DP-16FV) P PRSP0016DH-B HD74LS257FPEL SOP-16 pin (JEITA) (FP-16DAV) FP Note: Please consult the sales office for the above package availability.
Taping Abbreviation (Quantity) — EL (2,000 pcs/reel) Pin Arrangement Select 1 1A 2 1B 3 1Y 4 2A 5 2B 6 2Y 7 GND 8 S 1A OC 1B 4A 1Y 4B 2A 4Y 2B 3A 2Y 3B 3Y 16 VCC 15 Output Control 14 4A 13 4B 12 4Y 11 3A 10 3B 9 3Y (Top view) Rev.
3.
00, Jul.
15.
2005, page 1 of 5 HD74LS257 Function Table Note: Inputs OC S A B H X X X L L L X L L H X L H X L L H X H H; high level, L; low level, X; irrelevant, Z; off (high-impedance) state of a 3-state output Block Diagram Output Control 1A 1B 1Y 2A 2B 2Y 3A 3B 3Y 4A 4B 4Y Output Z L H L H S Absolute Maximum Ratings Item Symbol Ratings Supply voltage VCC 7 Input voltage VIN 7 Output voltage (off-state) VO (off) 5.
5 Operating temperature Topr –20 to +75 Power dissipation PT 400 Storage temperature Tstg –65 to +150 Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions Item Supply voltage Output current Operating temperature Symbol VC...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)