SN74LVC540A-Q1_16 Datasheet, PDF (1/15 Pages) Texas Instruments – OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

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SN74LVC540A-Q1
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCAS712B – SEPTEMBER 2003 – REVISED FEBRUARY 2008
FEATURES
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• Qualified for Automotive Applications
• ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
• Operates From 2 V to 3.6 V
• Inputs Accept Voltages to 5.5 V
• Max t_pd of 5.3 ns at 3.3 V
• Typical V_OLP (Output Ground Bounce) < 0.8 V
at V_CC = 3.3 V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot) > 2 V
at V_CC = 3.3 V, T_A = 25°C
• Supports Mixed-Mode Signal Operation on All
Ports (5-V Input/Output Voltage With 3.3-V V_CC)
• I_off Supports Partial-Power-Down Mode
Operation
DW OR PW PACKAGE
(TOP VIEW)
OE1 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
20 V_CC
19 OE2
18 Y1
17 Y2
16 Y3
15 Y4
14 Y5
13 Y6
12 Y7
11 Y8
DESCRIPTION/ORDERING INFORMATION
The SN74LVC540A octal buffer/driver is designed for 2.7-V to 3.6-V V_CC operation.
This device is ideal for driving bus lines or buffer-memory address registers. This device features inputs and
outputs on opposite sides of the package that facilitate printed circuit board layout.
The 3-state control gate is a 2-input AND gate with active-low inputs so that, if either output-enable (OE1 or OE2)
input is high, all outputs are in the high-impedance state.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in
a mixed 3.3-V/5-V system environment.
This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
T_A
–40°C to 125°C
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
SOIC – DW
Reel of 2000
SN74LVC540AQDWRQ1
TSSOP – PW
Reel of 2000
SN74LVC540AQPWRQ1
TOP-SIDE MARKING
L540AQ1
L540AQ1
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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