Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Buffer, driver SOIC 20

SN54AHC240, SN74AHC240

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCLS251H – OCTOBER 1995 – REVISED JULY 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Operating Range 2-V to 5.5-V V

Latch-Up Performance Exceeds 250 mA

Per JESD 17

description/ordering information

These octal buffers/drivers are designed

specifically to improve the performance and

density of 3-state memory-address drivers, clock

drivers, and bus-oriented receivers and

transmitters.

The ’AHC240 devices are organized as two 4-bit

buffers/line drivers with separate output-enable

(OE

) inputs. When OE is low, the device passes

data from the A inputs to the Y outputs. When OE

is high, the outputs are in the high-impedance

state.

To ensure the high-impedance state during power

up or power down, OE

should be tied to V

through a pullup resistor; the minimum value of

the resistor is determined by the current-sinking

capability of the driver.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – N Tube SN74AHC240N SN74AHC240N

SOIC – DW

Tube SN74AHC240DW

AHC240

SOIC

–

Tape and reel SN74AHC240DWR

AHC240

–40

Cto85

SOP – NS Tape and reel SN74AHC240NSR AHC240

–

40°C

85°C

SSOP – DB Tape and reel SN74AHC240DBR HA240

TSSOP PW

Tube SN74AHC240PW

HA240

TSSOP

–

Tape and reel SN74AHC240PWR

HA240

TVSOP – DGV Tape and reel SN74AHC240DGVR HA240

CDIP – J Tube SNJ54AHC240J SNJ54AHC240J

–55°C to 125°C

CFP – W Tube SNJ54AHC240W SNJ54AHC240W

LCCC – FK Tube SNJ54AHC240FK SNJ54AHC240FK

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

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.

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.

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

SN54AHC240 ...J OR W PACKAGE

SN74AHC240 . . . DB, DGV, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

3212019

910111213

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

SN54AHC240 . . . FK PACKAGE

(TOP VIEW)

2Y4

1A1

1OE

1Y4

2A2 2OE

2Y1

GND

2A1

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.

Summary of content (23 pages)

PAGE 1
SN54AHC240, SN74AHC240 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCLS251H – OCTOBER 1995 – REVISED JULY 2003 SN54AHC240 . . . J OR W PACKAGE SN74AHC240 . . . DB, DGV, DW, N, NS, OR PW PACKAGE (TOP VIEW) Operating Range 2-V to 5.
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SN54AHC240, SN74AHC240 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCLS251H – OCTOBER 1995 – REVISED JULY 2003 FUNCTION TABLE (each 4-bit buffer/driver) INPUTS OUTPUT Y OE A L H L L L H H X Z logic diagram (positive logic) 1OE 1A1 1A2 1A3 1A4 1 2OE 2 18 4 16 6 14 8 12 1Y1 2A1 1Y2 2A2 1Y3 2A3 1Y4 2A4 19 11 9 13 7 15 5 17 3 2Y1 2Y2 2Y3 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . .
PAGE 3
SN54AHC240, SN74AHC240 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCLS251H – OCTOBER 1995 – REVISED JULY 2003 recommended operating conditions (see Note 3) SN54AHC240 VCC Supply voltage VIH VCC = 2 V VCC = 3 V High-level input voltage Low-level input voltage VI VO 2 5.5 Output voltage ∆t/∆v 5.5 2.1 V V 0.5 0.9 0.9 1.65 1.65 V 0 5.5 0 5.5 V 0 VCC –50 0 VCC –50 mA VCC = 3.3 V ± 0.3 V VCC = 5 V ± 0.5 V VCC = 3.3 V ± 0.3 V Input transition rise or fall rate 2 UNIT 1.5 3.
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SN54AHC240, SN74AHC240 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCLS251H – OCTOBER 1995 – REVISED JULY 2003 switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.
PAGE 5
SN54AHC240, SN74AHC240 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCLS251H – OCTOBER 1995 – REVISED JULY 2003 noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 4) SN74AHC240 PARAMETER MIN TYP MAX UNIT VOL(P) VOL(V) Quiet output, maximum dynamic VOL 0.6 V Quiet output, minimum dynamic VOL –0.6 V VOH(V) VIH(D) Quiet output, minimum dynamic VOH 4.6 V High-level dynamic input voltage 3.
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SN54AHC240, SN74AHC240 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCLS251H – OCTOBER 1995 – REVISED JULY 2003 PARAMETER MEASUREMENT INFORMATION From Output Under Test RL = 1 kΩ From Output Under Test Test Point VCC Open S1 TEST GND CL (see Note A) CL (see Note A) S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open Drain Open VCC GND VCC LOAD CIRCUIT FOR 3-STATE AND OPEN-DRAIN OUTPUTS LOAD CIRCUIT FOR TOTEM-POLE OUTPUTS VCC 50% VCC Timing Input tw tsu VCC Input 50% VCC 50% VCC 0V th VCC 50% VCC Da
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN74AHC240DGVR TVSOP DGV 20 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 SN74AHC240DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1 SN74AHC240NSR SO NS 20 2000 330.0 24.4 8.2 13.0 2.5 12.0 24.
PAGE 11
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74AHC240DGVR TVSOP DGV 20 2000 367.0 367.0 35.0 SN74AHC240DWR SOIC DW 20 2000 367.0 367.0 45.0 SN74AHC240NSR SO NS 20 2000 367.0 367.0 45.0 SN74AHC240PWR TSSOP PW 20 2000 367.0 367.0 38.
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MECHANICAL DATA MPDS006C – FEBRUARY 1996 – REVISED AUGUST 2000 DGV (R-PDSO-G**) PLASTIC SMALL-OUTLINE 24 PINS SHOWN 0,40 0,23 0,13 24 13 0,07 M 0,16 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 0°– 8° 1 0,75 0,50 12 A Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,08 14 16 20 24 38 48 56 A MAX 3,70 3,70 5,10 5,10 7,90 9,80 11,40 A MIN 3,50 3,50 4,90 4,90 7,70 9,60 11,20 DIM 4073251/E 08/00 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
PAGE 23
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.