10-BIT BUFFER. CY74FCT2827T Datasheet

CY74FCT2827T BUFFER. Datasheet pdf. Equivalent

CY74FCT2827T Datasheet
Recommendation CY74FCT2827T Datasheet
Part CY74FCT2827T
Description 10-BIT BUFFER
Feature CY74FCT2827T; D Function and Pinout Compatible With FCT, F, and AM29827 Logic D 25-Ω Output Series Resistors Reduc.
Manufacture etcTI
Datasheet
Download CY74FCT2827T Datasheet




Texas Instruments CY74FCT2827T
D Function and Pinout Compatible With FCT,
F, and AM29827 Logic
D 25-Output Series Resistors Reduce
Transmission-Line Reflection Noise
D Reduced VOH (Typically = 3.3 V) Versions
of Equivalent FCT Functions
D Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
D Ioff 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 12-mA Output Sink Current
15-mA Output Source Current
D 3-State Outputs
CY74FCT2827T
10-BIT BUFFER
WITH 3-STATE OUTPUTS
SCCS045A – MAY 1994 – REVISED SEPTEMBER 2001
Q PACKAGE
(TOP VIEW)
OE1
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
GND
1
2
3
4
5
6
7
8
9
10
11
12
24 VCC
23 Y0
22 Y1
21 Y2
20 Y3
19 Y4
18 Y5
17 Y6
16 Y7
15 Y8
14 Y9
13 OE2
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 Ioff. The Ioff 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 4.4 CY74FCT2827CTQCT FCT2827C
–40°C to 85°C
QSOP – Q Tape and reel 8 CY74FCT2827ATQCT FCT2827A
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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Texas Instruments CY74FCT2827T
CY74FCT2827T
10-BIT BUFFER
WITH 3-STATE OUTPUTS
SCCS045A MAY 1994 REVISED SEPTEMBER 2001
FUNCTION TABLE
INPUTS
OE1
L
OE2
L
LL
D
L
H
OUTPUT
Y
L
H
FUNCTION
Transparent
HXX
XHX
Z
Z
3-State
H = High logic level, L = Low logic level, X = Dont care,
Z = High-impedance state
logic diagram (positive logic)
OE1
OE2
1
13
2
D0
23
Y0
To Nine Other Channels
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
DC output current (maximum sink current/pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 mA
Package thermal impedance, θJA (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61°C/W
Ambient temperature range with power applied, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 135°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under absolute maximum ratingsmay cause permanent damage to the device. These are stress ratings only, and
functionaloperation of the device at these or any other conditions beyond those indicated under recommended operating conditionsis not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 2)
MIN NOM MAX UNIT
VCC Supply voltage
VIH High-level input voltage
VIL Low-level input voltage
IOH High-level output current
IOL Low-level output current
TA Operating free-air temperature
NOTE 2: All unused inputs of the device must be held at VCC or GND to ensure proper device operation.
4.75
2
40
5 5.25 V
V
0.8 V
15 mA
12 mA
85 °C
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265



Texas Instruments CY74FCT2827T
CY74FCT2827T
10-BIT BUFFER
WITH 3-STATE OUTPUTS
SCCS045A MAY 1994 REVISED SEPTEMBER 2001
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYPMAX UNIT
VIK
VCC = 4.75,
IIN = 18 mA
0.7 1.2 V
VOH
VCC = 4.75,
IOH = 15 mA
2.4 3.3
V
VOL
VCC = 4.75,
IOL = 12 mA
0.3 0.55 V
Rout
VCC = 4.75,
IOL = 12 mA
20 25 40
Vhys
All inputs
0.2 V
II
VCC = 5.25 V,
VIN = VCC
5 µA
IIH
VCC = 5.25 V,
VIN = 2.7 V
±1 µA
IIL
IOS
VCC = 5.25 V,
VCC = 5.25 V,
VIN = 0.5 V
VOUT = 0 V
±1
60 120 225
µA
mA
Ioff
VCC = 0 V,
VOUT = 4.5 V
±1 µA
IOZH
VCC = 5.25 V,
VOUT = 2.7 V
10 µA
IOZL
VCC = 5.25 V,
VOUT = 0.5 V
10 µA
ICC
ICC
VCC = 5.25 V,
VIN 0.2 V,
VIN VCC 0.2 V
VCC = 5.25 V, VIN = 3.4 V§, f1 = 0, Outputs open
0.1 0.2 mA
0.5 2 mA
ICCD
VCC = 5.25 V, One input switching at 50% duty cycle, Outputs open,
OE1 or OE2 = GND, VIN 0.2 V or VIN VCC 0.2 V,
0.06
0.12
mA/
MHz
One bit switching
VIN 0.2 V or
at f1 = 10 MHz
VIN VCC 0.2 V
IC#
VCC = 5.25 V,
Outputs open,
OE1 or OE2 = GND
at 50% duty cycle
Ten bits switching
at f1 = 2.5 MHz
VIN = 3.4 V or GND
VIN 0.2 V or
VIN VCC 0.2 V
at 50% duty cycle
VIN = 3.4 V or GND
0.7 1.4
1 2.4
1.6 3.2||
4.1 13.2||
mA
Ci 5 10 pF
Co 9 12 pF
Typical values are at VCC = 5 V, TA = 25°C.
Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or
sample-and-hold techniques are preferable to minimize internal chip heating and more accurately reflect operational values. Otherwise, prolonged
shorting of a high output can raise the chip temperature well above normal and cause invalid readings in other parametric tests. In any sequence
of parameter tests, IOS tests should be performed last.
§ Per TTL-driven input (VIN = 3.4 V); all other inputs at VCC or GND
This parameter is derived for use in total power-supply calculations.
# IC = ICC + ICC × DH × NT + ICCD (f0/2 + f1 × N1)
Where:
IC = Total supply current
ICC = Power-supply current with CMOS input levels
ICC = Power-supply current for a TTL high input (VIN = 3.4 V)
DH = Duty cycle for TTL inputs high
NT = Number of TTL inputs at DH
ICCD = Dynamic current caused by an input transition pair (HLH or LHL)
f0 = Clock frequency for registered devices, otherwise zero
f1 = Input signal frequency
N1 = Number of inputs changing at f1
All currents are in milliamperes and all frequencies are in megahertz.
|| Values for these conditions are examples of the ICC formula.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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