CY74FCT2827T
10-BIT BUFFER
WITH 3-STATE OUTPUTS
SCCS045A 鈥?MAY 1994 鈥?REVISED SEPTEMBER 2001
D
D
D
D
D
D
D
D
D
D
Function and Pinout Compatible With FCT,
F, and AM29827 Logic
25-鈩?Output Series Resistors Reduce
Transmission-Line Reflection Noise
Reduced V
OH
(Typically = 3.3 V) Versions
of Equivalent FCT Functions
Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
I
off
Supports Partial-Power-Down Mode
Operation
ESD Protection Exceeds JESD 22
鈥?2000-V Human-Body Model (A114-A)
鈥?200-V Machine Model (A115-A)
鈥?1000-V Charged-Device Model (C101)
Matched Rise and Fall Times
Fully Compatible With TTL Input and
Output Logic Levels
12-mA Output Sink Current
15-mA Output Source Current
3-State Outputs
Q PACKAGE
(TOP VIEW)
OE
1
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
Y
0
Y
1
Y
2
Y
3
Y
4
Y
5
Y
6
Y
7
Y
8
Y
9
OE
2
description
The CY74FCT2827T 10-bit buffer provides high-performance bus-interface buffering for wide data/address
paths or buses carrying parity. This 10-bit buffer has NANDed output-enable (OE) inputs for maximum control
flexibility. The CY74FCT2827T is designed for high-capacitance-load drive capability, while providing
low-capacitance bus loading at both inputs and outputs. All inputs have clamp diodes and all outputs are
designed for low-capacitance bus loading in the high-impedance state. On-chip termination resistors at the
outputs reduce system noise caused by reflections. The CY74FCT2827T can replace the CY74FCT827T to
reduce noise in an existing design.
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
鈥?0擄C to 85擄C
40擄C
PACKAGE鈥?/div>
QSOP 鈥?Q
QSOP 鈥?Q
Tape and reel
Tape and reel
SPEED
(ns)
4.4
8
ORDERABLE
PART NUMBER
CY74FCT2827CTQCT
CY74FCT2827ATQCT
TOP-SIDE
MARKING
FCT2827C
FCT2827A
鈥?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.
Copyright
錚?/div>
2001, Texas Instruments Incorporated
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
鈥?/div>
DALLAS, TEXAS 75265
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