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Details, datasheet, quote on part number:JM38510/65760BRA
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Datasheet text preview:
SN54HCT540, SN74HCT540 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SCLS008C MARCH 1984 REVISED MARCH 2003
D D D D D D D D
Operating Voltage Range of 4.5 V to 5.5 V Low Power Consumption, 80-µA Max ICC Typical tpd = 12 ns ±6-mA Output Drive at 5 V Low Input Current of 1 µA Max Inputs Are TTL-Voltage Compatible High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs)
SN54HCT540 . . . J PACKAGE SN74HCT540 . . . DW OR N PACKAGE (TOP VIEW)
description/ordering information
OE1 A1 A2 A3 A4 A5 A6 A7 A8 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC OE2 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
These octal buffers and line drivers are designed to have the performance of the 'HCT240 devices and a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed circuit board layout. The 3-state control gate is a 2-input NOR. If either output-enable (OE1 or OE2) input is high, all eight outputs are in the high-impedance state. The 'HCT540 devices provide inverted data at the outputs. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ORDERING INFORMATION
TA PDIP N 40°C to 85°C SOIC DW DW PACKAGE Tube Tube Tape and reel ORDERABLE PART NUMBER SN74HCT540N SN74HCT540DW SN74HCT540DWR TOP-SIDE MARKING SN74HCT540N HCT540
55°C to 125°C CDIP J Tube SNJ54HCT540J SNJ54HCT540J Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each buffer/driver) INPUTS OE1 L L H X OE2 L L X H A L H X X OUTPUT Y H L Z 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 2003, 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.
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
1
SN54HCT540, SN74HCT540 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SCLS008C MARCH 1984 REVISED MARCH 2003
logic diagram (positive logic)
OE1 OE2 1 19
A1
2
18
Y1
To Seven Other Channels
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 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°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)
SN54HCT540 MIN VCC VIH VIL VI VO tt Supply voltage High-level input voltage Low-level input voltage Input voltage Output voltage Input transition (rise and fall) time VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V 4.5 2 0.8 0 0 VCC VCC 500 0 0 NOM 5 MAX 5.5 SN74HCT540 MIN 4.5 2 0.8 VCC VCC 500 NOM 5 MAX 5.5 UNIT V V V V V 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.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54HCT540, SN74HCT540 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
SCLS008C MARCH 1984 REVISED MARCH 2003
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VOH VOL II IOZ ICC ICC Ci TEST CONDITIONS CONDITIONS VI = VIH or VIL or VI = VIH or VIL or VI = VCC or 0 VO = VCC or 0, IOH = 20 µA IOH = 6 mA IOL = 20 µA IOL = 6 mA VI = VIH or VIL IO = 0 VCC 4.5 V 4.5 V 5.5 V 5.5 V 5.5 V 5.5 V 4.5 V to 5.5 V 1.4 3 MIN 4.4 3.98 TA = 25°C TYP MAX 4.499 4.3 0.001 0.17 ±0.1 ±0.01 0.1 0.26 ±100 ±0.5 8 2.4 10 SN54HCT540 MIN 4.4 3.7 0.1 0.4 ±1000 ±10 160 3 10 MAX SN74HCT540 MIN 4.4 3.84 0.1 0.33 ±1000 ±5 80 2.9 10 MAX UNIT V V nA µA µA mA pF
VI = VCC or 0, One input at 0.5 V or 2.4 V, Other inputs at 0 or VCC
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.
switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER tpd ten tdis tt FROM (INPUT) A TO (OUTPUT) Y Y Y Y VCC 4.5 V 5.5 V 4.5 V 5.5 V 4.5 V 5.5 V 4.5 V 5.5 V TA = 25°C MIN TYP MAX 13 12 20 18 19 18 8 7 20 18 30 27 30 27 12 11 SN54HCT540 MIN MAX 30 27 45 41 45 41 18 16 SN74HCT540 MIN MAX 25 23 38 34 38 34 15 14 UNIT ns ns ns ns
OE OE
switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1)
PARAMETER tpd ten tt FROM (INPUT) A TO (OUTPUT) Y Y Y VCC 4.5 V 5.5 V 4.5 V 5.5 V 4.5 V 5.5 V TA = 25°C MIN TYP MAX 20 19 26 25 17 14 30 27 40 36 42 38 SN54HCT540 MIN MAX 45 41 60 54 63 57 SN74HCT540 MIN MAX 38 34 50 45 53 48 UNIT ns ns ns
OE
operating characteristics, TA = 25°C
PARAMETER Cpd Power dissipation capacitance per buffer/driver TEST CONDITIONS No load TYP 35 UNIT pF
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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