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Details, datasheet, quote on part number:SN54HC240FK
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Datasheet text preview:
SN54HC240, SN74HC240 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SCLS128B DECEMBER 1982 REVISED MAY 1997
D D D
3-State Outputs Drive Bus Lines or Buffer Memory Address Registers High-Current Outputs Drive up to 15 LSTTL Loads Package Options Include Plastic (DW) and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
SN54HC240 . . . J OR W PACKAGE SN74HC240 . . . DW OR N PACKAGE (TOP VIEW)
description
These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The 'HC240 are organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low, the device passes inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. The SN54HC240 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74HC240 is characterized for operation from 40°C to 85°C.
1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1
SN54HC240 . . . FK PACKAGE (TOP VIEW)
1A2 2Y3 1A3 2Y2 1A4
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
2Y4 1A1 1OE VCC
2OE 1Y1 2A4 1Y2 2A3 1Y3
FUNCTION TABLE (each buffer/driver) INPUTS OE L L H A H L X OUTPUT Y L H Z
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.
Copyright © 1997, Texas Instruments Incorporated
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
2Y1 GND 2A1 1Y4 2A2
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SN54HC240, SN74HC240 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SCLS128B DECEMBER 1982 REVISED MAY 1997
logic symbol
1OE 1 EN 18 16 14 12 2OE 19 EN 9 7 5 3
1A1 1A2 1A3 1A4
2 4 6 8
1Y1 1Y2 1Y3 1Y4
2A1 2A2 2A3 2A4
11 13 15 17
2Y1 2Y2 2Y3 2Y4
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1OE 1 2OE 18 19
1A1
2
1Y1
2A1
11
9
2Y1
1A2
4
16
1Y2
2A2
13
7
2Y2
1A3
6
14
1Y3
2A3
15
5
2Y3
1A4
8
12
1Y4
2A4
17
3
2Y4
absolute maximum ratings over operating free-air temperature range
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V Input clamp current, IIK (VI VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (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, JA (see Note 2): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°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, except for through-hole packages, which use a trace length of zero.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54HC240, SN74HC240 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SCLS128B DECEMBER 1982 REVISED MAY 1997
recommended operating conditions
SN54HC240 MIN VCC VIH Supply voltage High-level input voltage VCC = 2 V VCC = 4.5 V VCC = 6 V VCC = 2 V VIL VI VO tt TA Low-level input voltage Input voltage Output voltage Input transition (rise and fall) time Operating free-air temperature VCC = 2 V VCC = 4.5 V VCC = 6 V VCC = 4.5 V VCC = 6 V 2 1.5 3.15 4.2 0 0 0 0 0 0 0 0 55 0.5 1.35 1.8 VCC VCC 1000 500 400 125 NOM 5 MAX 6 SN74HC240 MIN 2 1.5 3.15 4.2 0 0 0 0 0 0 0 0 40 0.5 1.35 1.8 VCC VCC 1000 500 400 85 °C ns V V V V NOM 5 MAX 6 UNIT V
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS CONDITIONS VCC 2V IOH = 20 µA VOH VI = VIH or VIL IOH = 6 mA IOH = 7.8 mA IOL = 20 µA VOL VI = VIH or VIL IOL = 6 mA IOL = 7.8 mA II IOZ ICC Ci VI = VCC or 0 VO = VCC or 0 VI = VCC or 0, IO = 0 4.5 V 6V 4.5 V 6V 2V 4.5 V 6V 4.5 V 6V 6V 6V 6V 2 V to 6 V 3 MIN 1.9 4.4 5.9 3.98 5.48 TA = 25°C TYP MAX 1.998 4.499 5.999 4.3 5.8 0.002 0.001 0.001 0.17 0.15 ±0.1 ±0.01 0.1 0.1 0.1 0.26 0.26 ±100 ±0.5 8 10 SN54HC240 MIN 1.9 4.4 5.9 3.7 5.2 0.1 0.1 0.1 0.4 0.4 ±1000 ±10 160 10 MAX SN74HC240 MIN 1.9 4.4 5.9 3.84 5.34 0.1 0.1 0.1 0.33 0.33 ±1000 ±5 80 10 nA µA µA pF V V MAX UNIT
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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