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CY74FCT2574CTSOC 参数 Datasheet PDF下载

CY74FCT2574CTSOC图片预览
型号: CY74FCT2574CTSOC
PDF下载: 下载PDF文件 查看货源
内容描述: 具有三态输出的8位寄存器 [8-BIT REGISTER WITH 3-STATE OUTPUTS]
分类和应用: 输出元件
文件页数/大小: 15 页 / 317 K
品牌: CONEXANT [ CONEXANT SYSTEMS, INC ]
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CY74FCT2374T
8-BIT REGISTER
WITH 3-STATE OUTPUTS
SCCS040A – SEPTEMBER 1994 – REVISED OCTOBER 2001
D
D
D
D
D
D
D
D
D
D
D
D
Function and Pinout Compatible With FCT
and F Logic
25-Ω Output Series Resistors to Reduce
Transmission-Line Reflection Noise
Reduced V
OH
(Typically = 3.3 V) Version of
Equivalent FCT Functions
Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
I
off
Supports Partial-Power-Down Mode
Operation
Matched Rise and Fall Times
Fully Compatible With TTL Input and
Output Logic Levels
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
3-State Outputs
12-mA Output Sink Current
15-mA Output Source Current
Edge-Triggered D-Type Inputs
250-MHz Typical Switching Rate
SN74FCT2374T . . . Q OR SO PACKAGE
(TOP VIEW)
OE
O
0
D
0
D
1
O
1
O
2
D
2
D
3
O
3
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
O
7
D
7
D
6
O
6
O
5
D
5
D
4
O
4
CP
description
The CY74FCT2374T is a high-speed, low-power, octal D-type flip-flop featuring separate D-type inputs for each
flip-flop. On-chip termination resistors at the outputs reduce system noise caused by reflections. The
CY74FCT2374T can replace the CY74FCT374T to reduce noise in an existing design. The device has 3-state
outputs for bus-oriented applications. A buffered clock (CP) and output-enable (OE) inputs are common to all
flip-flops. The flip-flops in the CY74FCT2374T store the state of their individual data (D) inputs that meet the
setup-time and hold-time requirements on the low-to-high CP transition. When OE is low, the contents of the
flip-flops are available at the outputs. When OE is high, the outputs are in the high-impedance state. The state
of OE does not affect the state of the flip-flops.
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.
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
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
DALLAS, TEXAS 75265
1