CY54FCT244T_08 Datasheet, PDF (1/20 Pages) Texas Instruments – 8-BIT BUFFERS/LINE DRIVERS WITH 3-STATE OUTPUTS

D Function, Pinout, and Drive Compatible
With FCT and F Logic
D Reduced V_OH (Typically = 3.3 V) Versions
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 Matched Rise and Fall Times
D Fully Compatible With TTL Input and
Output Logic Levels
D CY54FCT244T
– 48-mA Output Sink Current
12-mA Output Source Current
D CY74FCT244T
– 64-mA Output Sink Current
32-mA Output Source Current
D 3-State Outputs
CY54FCT244T, CY74FCT244T
8-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCCS071 – OCTOBER 2001
CY54FCT244T . . . D PACKAGE
CY74FCT244T . . . P, 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
CY54FCT244T . . . L PACKAGE
(TOP VIEW)
DA₁
OB₁
DA₂
OB₂
DA₃
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
OA₀
DB₀
OA₁
DB₁
OA₂
description
The ’FCT244T devices are octal buffers and line drivers designed to be employed as memory address drivers,
clock drivers, and bus-oriented transmitters/receivers. These devices provide speed and drive capabilities
equivalent to their fastest bipolar logic counterparts, while reducing power consumption. The input and output
voltage levels allow direct interface with TTL, NMOS, and CMOS devices without external components.
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 device when it is powered down.
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
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.
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