Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Buffer, driver TSSOP 20

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FEATURES

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

DGV, DW, NS, OR PW PACKAGE

(TOP VIEW)

DESCRIPTION/ORDERING INFORMATION

SN74ALVCH244

OCTAL BUFFER/DRIVER

WITH 3-STATE OUTPUTS

SCES112F – JULY 1997 – REVISED AUGUST 2004

• Operates From 1.65 V to 3.6 V

• Max t

of 2.8 ns at 3.3 V

• ±24-mA Output Drive at 3.3 V

• Bus Hold on Data Inputs Eliminates the Need

for External Pullup/Pulldown Resistors

• Latch-Up Performance Exceeds 250 mA Per

JESD 17

• ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

This octal buffer/line driver is designed for 1.65-V to 3.6-V V

operation.

The SN74ALVCH244 is organized as two 4-bit 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.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors

with the bus-hold circuitry is not recommended.

ORDERING INFORMATION

PACKAGE

(1)

ORDERABLE PART NUMBER TOP-SIDE MARKING

Tube SN74ALVCH244DW

SOIC - DW ALVCH244

Tape and reel SN74ALVCH244DWR

SOP - NS Tape and reel SN74ALVCH244NSR ALVCH244

-40°C to 85°C

Tube SN74ALVCH244PW

TSSOP - PW VB244

Tape and reel SN74ALVCH244PWR

TVSOP - DGV Tape and reel SN74ALVCH244DGVR VB244

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

FUNCTION TABLE

(each buffer)

INPUTS

OUTPUT

OE A

L H H

L L L

H X 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.

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.

Summary of content (15 pages)

PAGE 1
SN74ALVCH244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES112F – JULY 1997 – REVISED AUGUST 2004 FEATURES • • • • • • DGV, DW, NS, OR PW PACKAGE (TOP VIEW) Operates From 1.65 V to 3.6 V Max tpd of 2.8 ns at 3.3 V ±24-mA Output Drive at 3.
PAGE 2
SN74ALVCH244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES112F – JULY 1997 – REVISED AUGUST 2004 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 (1) over operating free-air temperature range (unless otherwise noted) VCC MIN MAX Supply voltage range -0.5 4.6 V range (2) -0.5 4.6 V -0.5 VCC + 0.
PAGE 3
SN74ALVCH244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES112F – JULY 1997 – REVISED AUGUST 2004 RECOMMENDED OPERATING CONDITIONS (1) VCC Supply voltage VCC = 1.65 V to 1.95 V VIH High-level input voltage MIN MAX 1.65 3.6 Low-level input voltage VI Input voltage VO Output voltage IOH High-level output current IOL Low-level output current ∆t/∆v Input transition rise or fall rate TA Operating free-air temperature (1) V 0.65 × VCC VCC = 2.3 V to 2.7 V 1.7 VCC = 2.
PAGE 4
SN74ALVCH244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES112F – JULY 1997 – REVISED AUGUST 2004 ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS IOH = -100 µA 1.65 V to 3.6 V 1.65 V IOH = -6 mA 2.3 V 2 2.3 V 1.7 2.7 V 2.2 3V 2.4 IOH = -24 mA 3V 2 IOL = 100 µA IOH = -12 mA 0.2 1.65 V 0.45 IOL = 6 mA 2.3 V 0.4 2.3 V 0.7 VI = VCC or GND II(hold) 1.65 V 1.65 V (2) VI = 0.7 V 2.
PAGE 5
SN74ALVCH244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES112F – JULY 1997 – REVISED AUGUST 2004 OPERATING CHARACTERISTICS TA = 25°C TEST CONDITIONS PARAMETER Cpd (1) Power dissipation capacitance per buffer/driver Outputs enabled Outputs disabled CL = 0, f = 10 MHz VCC = 1.8 V VCC = 2.5 V VCC = 3.3 V TYP TYP TYP (1) 22 28 (1) 1.5 4 UNIT pF This information was not available at the time of publication.
PAGE 6
SN74ALVCH244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES112F – JULY 1997 – REVISED AUGUST 2004 PARAMETER MEASUREMENT INFORMATION VLOAD S1 RL From Output Under Test Open GND CL (see Note A) RL TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open VLOAD GND LOAD CIRCUIT INPUT VCC 1.8 V ± 0.15 V 2.5 V ± 0.2 V 2.7 V 3.3 V ± 0.3 V VI tr/tf VCC VCC 2.7 V 2.7 V ≤2 ns ≤2 ns ≤2.5 ns ≤2.5 ns VM VLOAD CL RL V∆ VCC/2 VCC/2 1.5 V 1.
PAGE 7
PACKAGE OPTION ADDENDUM www.ti.
PAGE 8
PACKAGE OPTION ADDENDUM www.ti.com 28-Aug-2010 ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
PAGE 9
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74ALVCH244DGVR 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 TVSOP DGV 20 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.0 Q1 SN74ALVCH244DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1 SN74ALVCH244PWR TSSOP PW 20 2000 330.0 16.4 6.95 7.1 1.6 8.0 16.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74ALVCH244DGVR TVSOP DGV 20 2000 367.0 367.0 35.0 SN74ALVCH244DWR SOIC DW 20 2000 367.0 367.0 45.0 SN74ALVCH244PWR TSSOP PW 20 2000 367.0 367.0 38.
PAGE 11
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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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 JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.