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CY74FCT2244T

8-BIT BUFFER/LINE DRIVER

WITH 3-STATE OUTPUTS

SCCS074 – OCTOBER 2001

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Function and Pinout Compatible With FCT

and F Logic

25-Ω Output Series Resistors Reduce

Transmission-Line Reflection Noise

TTL-Output-Level Version of Equivalent

FCT Functions

Edge-Rate Control Circuitry for

Significantly Improved Noise

Characteristics

off

Supports Partial-Power-Down Mode

Operation

ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

Fully Compatible With TTL Input and

Output Logic Levels

12-mA Output Sink Current

15-mA Output Source Current

3-State Outputs

description

The CY74FCT2244T is an octal buffer and line driver that includes on-chip 25-Ω terminating resistors at each

of the outputs to minimize noise resulting from reflections or standing waves in high-performance applications.

The on-chip resistors reduce overall board space and component count. Designed to be employed as a memory

address driver, clock driver, and bus-oriented transmitter/receiver, this device provides speed and drive

capabilities commensurate with its fastest bipolar logic counterparts, while reducing power dissipation. The

input and output voltage levels allow direct interface with TTL, NMOS, and CMOS devices, without the need

for external components.

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.

ORDERING INFORMATION

PACKAGE

†

SPEED

(ns)

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

QSOP – Q Tape and reel 4.3 CY74FCT2244CTQCT FCT2244C

SOIC SO

Tube 4.3 CY74FCT2244CTSOC

FCT2244C

SOIC

–

Tape and reel 4.3 CY74FCT2244CTSOCT

FCT2244C

QSOP – Q Tape and reel 4.6 CY74FCT2244ATQCT FCT2244A

–40°C to 85°C

SOIC SO

Tube 4.6 CY74FCT2244ATSOC

FCT2244A

SOIC

–

Tape and reel 4.6 CY74FCT2244ATSOCT

FCT2244A

QSOP – Q Tape and reel 6.5 CY74FCT2244TQCT FCT2244

SOIC SO

Tube 6.5 CY74FCT2244TSOC

FCT2244

SOIC

–

Tape and reel 6.5 CY74FCT2244TSOCT

FCT2244

†

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.

GND

Q OR SO PACKAGE

(TOP VIEW)

Summary of content (15 pages)

PAGE 1
CY74FCT2244T 8-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS SCCS074 – OCTOBER 2001 D D D D D D D D D Function and Pinout Compatible With FCT and F Logic 25-Ω Output Series Resistors Reduce Transmission-Line Reflection Noise TTL-Output-Level Version of Equivalent FCT Functions Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics Ioff Supports Partial-Power-Down Mode Operation ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Cha
PAGE 2
CY74FCT2244T 8-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS SCCS074 – OCTOBER 2001 FUNCTION TABLE INPUTS D OUTPUT O OEA OEB L L L L L L H H H H X Z H = High logic level, L = Low logic level, X = Don’t care, Z = High-impedance (off) state logic diagram OEA 1 19 DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3 2 2 18 3 17 4 16 5 15 6 14 7 13 8 12 9 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 OEB OA0 DB0 OA1 DB1 OA2 DB2 OA3 DB3
PAGE 3
CY74FCT2244T 8-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS SCCS074 – OCTOBER 2001 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range to ground potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V DC input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V DC output voltage range . . .
PAGE 4
CY74FCT2244T 8-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS SCCS074 – OCTOBER 2001 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK VOH VCC = 4.75 V, VCC = 4.75 V, IIN = –18 mA IOH = –15 mA VOL ROUT VCC = 4.75 V, VCC = 4.75 V, IOL = 12 mA IOL = 12 mA Vhys II All inputs IIH IIL IOZH IOZL IOS‡ Ioff ICC ∆ICC ICCD¶ IC# MIN 2.4 20 TYP† MAX UNIT –0.7 –1.2 V 3.3 V 0.3 0.
PAGE 5
CY74FCT2244T 8-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS SCCS074 – OCTOBER 2001 switching characteristics over operating free-air temperature range (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL D O tPZH tPZL OE O tPHZ tPLZ OE O POST OFFICE BOX 655303 CY74FCT2244T CY74FCT2244AT CY74FCT2244CT MIN MAX MIN MAX MIN MAX 1.5 6.5 1.5 4.6 1.5 4.1 1.5 6.5 1.5 4.6 1.5 4.1 1.5 8 1.5 6.2 1.5 5.8 1.5 8 1.5 6.2 1.5 5.8 1.5 7 1.5 5.6 1.5 5.2 1.5 7 1.
PAGE 6
CY74FCT2244T 8-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS SCCS074 – OCTOBER 2001 PARAMETER MEASUREMENT INFORMATION 7V From Output Under Test From Output Under Test Test Point CL = 50 pF (see Note A) Open TEST GND CL = 50 pF (see Note A) 500 Ω S1 500 Ω S1 Open 7V Open tPLH/tPHL tPLZ/tPZL tPHZ/tPZH 500 Ω LOAD CIRCUIT FOR 3-STATE OUTPUTS LOAD CIRCUIT FOR TOTEM-POLE OUTPUTS 3V 1.5 V Timing Input 0V tw tsu 3V 1.5 V Input 1.5 V th 3V 1.5 V Data Input 1.
PAGE 7
PACKAGE OPTION ADDENDUM www.ti.
PAGE 8
PACKAGE OPTION ADDENDUM www.ti.
PAGE 9
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) CY74FCT2244ATQCT SSOP DBQ 20 2500 330.0 16.4 6.5 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 9.0 2.1 8.0 16.0 Q1 CY74FCT2244CTQCT SSOP DBQ 20 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 CY74FCT2244CTSOCT SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.
PAGE 10
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) CY74FCT2244ATQCT SSOP DBQ 20 2500 367.0 367.0 38.0 CY74FCT2244CTQCT SSOP DBQ 20 2500 367.0 367.0 38.0 CY74FCT2244CTSOCT SOIC DW 20 2000 367.0 367.0 45.0 CY74FCT2244TQCT SSOP DBQ 20 2500 367.0 367.0 38.
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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.