Datasheet

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FEATURES

SN54LVCH244A . . . J OR W PACKAGE

SN74LVCH244A . . . DB, DBQ, DGV, DW,

NS, OR PW PACKAGE

(TOP VIEW)

SN54LVCH244A . . . FK PACKAGE

(TOP VIEW)

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

3 2 1 20 19

9 10 11 12 13

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

2Y4

1A1

1OE

1Y4

2A2 2OE

2Y1

GND

2A1

SN74LVCH244A . . . RGY PACKAGE

(TOP VIEW)

1 20

10 11

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

1OE

2A1

GND

DESCRIPTION/ORDERING INFORMATION

SN54LVCH244A , , SN74LVCH244A

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCES009O – JULY 1995 – REVISED FEBRUARY 2007

• Operate From 1.65 V to 3.6 V • I

off

Supports Partial-Power-Down Mode

Operation

• Inputs Accept Voltages to 5.5 V

• Bus Hold on Data Inputs Eliminates the Need

• Max t

of 5.9 ns at 3.3 V

for External Pullup/Pulldown Resistors

• Typical V

OLP

(Output Ground Bounce)

• Latch-Up Performance Exceeds 250 mA Per

<0.8 V at V

= 3.3 V, T

= 25 ° C

JESD 17

• Typical V

OHV

(Output V

Undershoot)

• ESD Protection Exceeds JESD 22

>2 V at V

= 3.3 V, T

= 25 ° C

– 2000-V Human-Body Model (A114-A)

• Support Mixed-Mode Signal Operation on All

Ports – 200-V Machine Model (A115-A)

(5-V Input/Output Voltage With 3.3-V V

)

– 1000-V Charged-Device Model (C101)

The SN54LVCH244A octal buffer/line driver is designed for 2.7-V to 3.6-V V

operation, and the

SN74LVCH244A octal buffer/line driver is designed for 1.65-V to 3.6-V V

operation.

These devices are organized as two 4-bit line drivers with separate output-enable ( OE) inputs. When OE is low,

these devices pass data from the A inputs to the Y outputs. When OE is high, the outputs are in the

high-impedance state.

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.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators

in a mixed 3.3-V/5-V system environment.

These devices are fully specified for partial-power-down applications using I

off

. The I

off

circuitry disables the

outputs, preventing damaging current backflow through the devices when they are powered down.

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.

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 (28 pages)

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SN54LVCH244A,, SN74LVCH244A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS www.ti.com SCES009O – JULY 1995 – REVISED FEBRUARY 2007 FEATURES 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 20 3 4 19 2OE 18 1Y1 17 2A4 5 6 16 1Y2 15 2A3 7 8 14 1Y3 13 2A2 12 1Y4 9 10 11 1A2 2Y3 1A3 2Y2 1A4 4 2OE 1 2 SN54LVCH244A . . . FK PACKAGE (TOP VIEW) 2Y4 1A1 1OE VCC SN74LVCH244A . . .
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SN54LVCH244A,, SN74LVCH244A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS www.ti.
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SN54LVCH244A,, SN74LVCH244A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS www.ti.com SCES009O – JULY 1995 – REVISED FEBRUARY 2007 Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN MAX VCC Supply voltage range –0.5 6.5 V VI Input voltage range (2) –0.5 6.5 V –0.5 6.5 V –0.5 VCC + 0.
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SN54LVCH244A,, SN74LVCH244A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS www.ti.com SCES009O – JULY 1995 – REVISED FEBRUARY 2007 Recommended Operating Conditions (1) SN54LVCH244A VCC Supply voltage VIH High-level input voltage Operating Data retention only MIN MAX MIN MAX 2 3.6 1.65 3.6 1.5 1.5 VCC = 2.3 V to 2.7 V 1.7 2 Low-level input voltage Input voltage VO Output voltage 0.7 0.8 High-level output current 0 5.5 0 5.5 High or low state 0 VCC 0 VCC 3-state 0 5.5 0 5.
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SN54LVCH244A,, SN74LVCH244A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS www.ti.com SCES009O – JULY 1995 – REVISED FEBRUARY 2007 Electrical Characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS 2.7 V to 3.6 V 1.2 1.7 2.4 3V 2.2 2.2 0.2 0.2 1.65 V 0.45 IOL = 8 mA 2.3 V 0.7 IOL = 12 mA 2.7 V 0.4 0.4 IOL = 24 mA 3V 0.55 0.55 ±5 ±5 µA ±10 µA VI = 0 to 5.5 V 3.6 V VI or VO = 5.5 V 0 1.65 V (2) 45 2.3 V VI = 1.
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SN54LVCH244A,, SN74LVCH244A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS www.ti.com SCES009O – JULY 1995 – REVISED FEBRUARY 2007 Switching Characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1) SN54LVCH244A PARAMETER FROM (INPUT) TO (OUTPUT) MIN MAX MIN MAX tpd A Y 7.5 1 6.5 ns ten OE Y 9 1 8 ns tdis OE Y 8 1 7 ns VCC = 2.7 V VCC = 3.3 V ± 0.
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SN54LVCH244A,, SN74LVCH244A OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS www.ti.com SCES009O – JULY 1995 – REVISED FEBRUARY 2007 PARAMETER MEASUREMENT INFORMATION VLOAD S1 RL From Output Under Test CL (see Note A) Open GND RL TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open VLOAD GND LOAD CIRCUIT INPUTS 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.
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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.
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PACKAGE OPTION ADDENDUM www.ti.com (4) 25-Sep-2013 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74LVCH244ADBQR Package Package Pins Type Drawing SSOP SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant DBQ 20 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 SN74LVCH244ADBR SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74LVCH244ADGVR TVSOP DGV 20 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74LVCH244ADBQR SSOP DBQ 20 2500 367.0 367.0 38.0 SN74LVCH244ADBR SSOP DB 20 2000 367.0 367.0 38.0 SN74LVCH244ADGVR TVSOP DGV 20 2000 367.0 367.0 35.0 SN74LVCH244ADWR SOIC DW 20 2000 367.0 367.0 45.0 SN74LVCH244ANSR SO NS 20 2000 367.0 367.0 45.0 SN74LVCH244APWR TSSOP PW 20 2000 367.0 367.
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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.
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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 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.