D Operating Voltage Range of 4.5 V to 5.5 V
D State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D P-N-P Inputs Reduce DC Loading
SN54BCT540 . . . J OR W PACKAGE
SN74BCT540A . . . DW, N, OR NS PACKAGE
WITH 3-STATE OUTPUTS
SCBS012E – JULY 1988 – REVISED MARCH 2003
D Data Flow-Through Pinout (All Inputs on
Opposite Side From Outputs)
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
SN54BCT540 . . . FK PACKAGE
3 2 1 20 19
9 10 11 12 13
The SN54BCT540 and SN74BCT540A octal buffers and line drivers are ideal for driving bus lines or buffer
memory-address registers. The devices feature inputs and outputs on opposite sides of the package to 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 corresponding outputs are in the high-impedance state.
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.
PDIP – N
0°C to 70°C
SOIC – DW
Tape and reel
SOP – NS
Tape and reel SN74BCT540ANSR
CDIP – J
–55°C to 125°C CFP – W
LCCC – FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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 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.