CY74FCT2244T Datasheet, PDF (1/16 Pages) Texas Instruments – 8-BIT BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS

D Function and Pinout Compatible With FCT
and F Logic
D 25-Ω Output Series Resistors Reduce
Transmission-Line Reflection Noise
D TTL-Output-Level Version of Equivalent
FCT Functions
D Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
D I_off Supports Partial-Power-Down Mode
Operation
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)
D Fully Compatible With TTL Input and
Output Logic Levels
D 12-mA Output Sink Current
15-mA Output Source Current
D 3-State Outputs
CY74FCT2244T
8-BIT BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
SCCS074 – OCTOBER 2001
Q OR SO PACKAGE
(TOP VIEW)
OE_A 1
DA₀ 2
OB₀ 3
DA₁ 4
OB₁ 5
DA₂ 6
OB₂ 7
DA₃ 8
OB₃ 9
GND 10
20 V_CC
19 OE_B
18 OA₀
17 DB₀
16 OA₁
15 DB₁
14 OA₂
13 DB₂
12 OA₃
11 DB₃
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
TA
PACKAGE†
SPEED
(ns)
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QSOP – Q Tape and reel
4.3
CY74FCT2244CTQCT
FCT2244C
Tube
4.3
CY74FCT2244CTSOC
SOIC – SO
FCT2244C
Tape and reel
4.3
CY74FCT2244CTSOCT
QSOP – Q Tape and reel
4.6
CY74FCT2244ATQCT
FCT2244A
–40°C to 85°C
Tube
4.6
CY74FCT2244ATSOC
SOIC – SO
FCT2244A
Tape and reel
4.6
CY74FCT2244ATSOCT
QSOP – Q Tape and reel
6.5
CY74FCT2244TQCT
FCT2244
Tube
6.5
CY74FCT2244TSOC
SOIC – SO
FCT2244
Tape and reel
6.5
CY74FCT2244TSOCT
† _{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  2001, Texas Instruments Incorporated
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