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74125 Dataheets PDF



Part Number 74125
Manufacturers Texas Instruments
Logo Texas Instruments
Description QUADRUPLE BUS BUFFERS
Datasheet 74125 Datasheet74125 Datasheet (PDF)

The SN54125, SN54126, SN74125, SN74126, and SN54LS126A are obsolete and are no longer supplied. SN54125, SN54126, SN54LS125A, SN54LS126A, SN74125, SN74126, SN74LS125A, SN74LS126A QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS SDLS044A – DECEMBER 1983 – REVISED MARCH 2002 D Quad Bus Buffers D 3-State Outputs D Separate Control for Each Channel description These bus buffers feature three-state outputs that, when enabled, have the low impedance characteristics of a TTL output with additional drive ca.

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The SN54125, SN54126, SN74125, SN74126, and SN54LS126A are obsolete and are no longer supplied. SN54125, SN54126, SN54LS125A, SN54LS126A, SN74125, SN74126, SN74LS125A, SN74LS126A QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS SDLS044A – DECEMBER 1983 – REVISED MARCH 2002 D Quad Bus Buffers D 3-State Outputs D Separate Control for Each Channel description These bus buffers feature three-state outputs that, when enabled, have the low impedance characteristics of a TTL output with additional drive capability at high logic levels to permit driving heavily loaded bus lines without external pullup resistors. When disabled, both output transistors are turned off, presenting a high-impedance state to the bus so the output will act neither as a significant load nor as a driver. The ’125 and ’LS125A devices’ outputs are disabled when G is high. The ’126 and ’LS126A devices’ outputs are disabled when G is low. SN54125, SN54126, SN54LS125A, SN54LS126A . . . J OR W PACKAGE SN74125, SN74126 . . . N PACKAGE SN74LS125A, SN74LS126A . . . D, N, OR NS PACKAGE (TOP VIEW) 1G, 1G* 1 1A 2 1Y 3 2G, 2G* 4 2A 5 2Y 6 GND 7 14 VCC 13 4G, 4G* 12 4A 11 4Y 10 3G, 3G* 9 3A 8 3Y *G on ’125 and ’LS125A devices; G on 126 and ’LS126A devices SN54LS125A, SN54LS126A . . . FK PACKAGE (TOP VIEW) 1A 1G, 1G* NC VCC 4G, 4G* 1Y NC 2G, 2G* NC 2A 3 2 1 20 19 4 18 5 17 6 16 7 15 8 14 9 10 11 12 13 4A NC 4Y NC 3G, 3G* 2Y GND NC 3Y 3A *G on ’125 and ’LS125A devices; G on 126 and ’LS126A devices NC – No internal connection Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 Copyright  2002, Texas Instruments Incorporated On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. 1 SN54125, SN54126, SN54LS125A, SN54LS126A, SN74125, SN74126, SN74LS125A, SN74LS126A QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS SDLS044A – DECEMBER 1983 – REVISED MARCH 2002 The SN54125, SN54126, SN74125, SN74126, and SN54LS126A are obsolete and are no longer supplied. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP – N Tube Tube SN74LS125AN SN74LS126AN SN74LS125AN SN74LS126AN 0°C to 70°C SOIC – D Tube Tape and reel Tube Tape and reel SN74LS125AD SN74LS125ADR SN74LS126AD SN74LS126ADR LS125A LS126A SOP – NS Tape and reel Tape and reel SN74LS125ANSR SN74LS126ANSR 74LS125A 74LS126A –55°C to 125°C CDIP – J CFP – W Tube Tube Tube SN54LS125AJ SNJ54LS125AJ SNJ54LS125AW SN54LS125AJ SNJ54LS125AJ SNJ54LS125AW LCCC – FK Tube SNJ54LS125AFK SNJ54LS125AFK † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. logic diagram (each gate) ’125, ’LS125A G A Y ’126, ’LS126A G A Y Y=A 2 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 The SN54125, SN54126, SN74125, SN74126, and SN54LS126A are obsolete and are no longer supplied. schematics (each gate) 4 kW 2.5 kW SN54125, SN54126, SN54LS125A, SN54LS126A, SN74125, SN74126, SN74LS125A, SN74LS126A QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS SDLS044A – DECEMBER 1983 – REVISED MARCH 2002 ’125 CIRCUITS 4 kW 2.5 kW VCC 1 kW 85 W CONTROL INPUT G DATA INPUT A 1.6 kW 1.6 kW 4 kW 4.25 kW 2.5 kW ’126 CIRCUITS 4 kW 2.5 kW 4 kW 625 W OUTPUT Y GND VCC 1 kW 85 W CONTROL INPUT G DATA INPUT A 1.6 kW 1.6 kW 4 kW 625 W OUTPUT Y GND absolute maximum ratings over operating free-air temperature (unless otherwise noted)† (’125 and ’126) Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Package thermal impedance, θJA (see Note 2): N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not imp.


54LS126A 74125 74126


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