Electronic Components Datasheet Search |
|
SN74HCT257D Datasheet(PDF) 3 Page - Texas Instruments |
|
|
SN74HCT257D Datasheet(HTML) 3 Page - Texas Instruments |
3 / 13 page SN54HCT257, SN74HCT257 QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SCLS072D − NOVEMBER 1988 − REVISED SEPTEMBER 2003 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output current, IO (VO = 0 to VCC) ±35 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous current through VCC or GND ±70 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): D package 73 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N package 67 °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 implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions (see Note 3) SN54HCT257 SN74HCT257 UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage VCC = 4.5 V to 5.5 V 2 2 V VIL Low-level input voltage VCC = 4.5 V to 5.5 V 0.8 0.8 V VI Input voltage 0 VCC 0 VCC V VO Output voltage 0 VCC 0 VCC V tt Input transition (rise and fall) time 500 500 ns TA Operating free-air temperature −55 125 −40 85 °C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C SN54HCT257 SN74HCT257 UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT VOH VI = VIH or VIL IOH = −20 µA 4.5 V 4.4 4.499 4.4 4.4 V VOH VI = VIH or VIL IOH = −6 mA 4.5 V 3.98 4.3 3.7 3.84 V VOL VI = VIH or VIL IOL = 20 µA 4.5 V 0.001 0.1 0.1 0.1 V VOL VI = VIH or VIL IOL = 6 mA 4.5 V 0.17 0.26 0.4 0.33 V II VI = VCC or 0 5.5 V ±0.1 ±100 ±1000 ±1000 nA IOZ VO = VCC or 0, VI = VIH or VIL 5.5 V ±0.01 ±0.5 ±10 ±5 µA ICC VI = VCC or 0, IO = 0 5.5 V 8 160 80 µA ∆ICC‡ One input at 0.5 V or 2.4 V, Other inputs at 0 or VCC 5.5 V 1.4 2.4 3 2.9 mA Ci 4.5 V to 5.5 V 3 10 10* 10 pF * On products compliant to MIL-PRF-38535, this parameter is not production tested. ‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
Similar Part No. - SN74HCT257D |
|
Similar Description - SN74HCT257D |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |