IDT74FCT2244ATPG8 [IDT]
Bus Driver, FCT Series, 2-Func, 4-Bit, True Output, CMOS, PDSO20, TSSOP-20;
| 型号： | IDT74FCT2244ATPG8 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Driver, FCT Series, 2-Func, 4-Bit, True Output, CMOS, PDSO20, TSSOP-20 光电二极管 |
| 文件： | 总6页 (文件大小：69K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FAST CMOS OCTAL
BUFFER/LINE DRIVER
IDT74FCT2244AT/CT
FEATURES:
DESCRIPTION:
• A and C grades
The IDT octal buffer/line driver is built using an advanced dual metal
CMOS technology. The FCT2244T is designed to be employed as a
memory and address driver, clock driver, and bus-oriented transmitter/
receiver which provides improved board density.
• Low input and output leakage ≤1µA (max.)
• CMOS power levels
• True TTL input and output compatibility:
– VOH = 3.3V (typ.)
TheFCT2244Thasbalancedoutputdrivewithcurrentlimitingresistors.
This offers lowgroundbounce,minimalundershoot,andcontrolledoutput
falltimes,reducingthe needforexternalseries terminatingresistors. The
FCT2244T is a plug-in replacement for the FCT244T.
– VOL = 0.3V (typ.)
• Meets or exceeds JEDEC standard 18 specifications
• Resistor outputs (-15mA IOH, 12mA IOL)
• Reduced system switching noise
• Available in SOIC, QSOP, and TSSOP packages
FUNCTIONALBLOCKDIAGRAM
OEA
OEB
OA0
DB0
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
OA1
DB1
OA2
DB2
OA3
DB3
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2006
1
© 2006 Integrated Device Technology, Inc.
DSC-5587/6
IDT74FCT2244AT/CT
FASTCMOSOCTALBUFFER/LINEDRIVER
INDUSTRIALTEMPERATURERANGE
ABSOLUTEMAXIMUMRATINGS(1)
PINCONFIGURATION
Symbol
Description
Max
Unit
V
(2)
VTERM
Terminal Voltage with Respect to GND
–0.5 to +7
20
19
18
17
16
15
14
13
12
11
(3)
1
VTERM
Terminal Voltage with Respect to GND –0.5 to VCC+0.5
V
OEA
DA0
VCC
OEB
OA0
DB0
OA1
TSTG
IOUT
Storage Temperature
DC Output Current
–65 to +150
–60 to +120
° C
mA
2
3
4
OB0
DA1
OB1
DA2
OB2
DA3
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability. No terminal voltage may exceed
Vcc by +0.5V unless otherwise noted.
5
6
DB1
OA2
DB2
2. Inputs and Vcc terminals only.
3. Output and I/O terminals only.
7
8
9
OA3
DB3
OB3
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Symbol
Parameter(1)
Input Capacitance
Output Capacitance
Conditions
Typ.
Max. Unit
GND
10
CIN
VIN = 0V
6
10
12
pF
pF
COUT
VOUT = 0V
8
SOIC/ QSOP/ TSSOP
TOP VIEW
NOTE:
1. This parameter is measured at characterization but not tested.
PINDESCRIPTION
Pin Names
OEA, OEB
Dxx
Description
3-State Output Enable Inputs (Active LOW)
Inputs
Oxx
Outputs
FUNCTIONTABLE(1)
Inputs
OEA
L
OEB
L
D
L
Outputs
H
L
Z
L
L
H
X
H
H
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
Z = High Impedance
2
IDT74FCT2244AT/CT
FASTCMOSOCTALBUFFER/LINEDRIVER
INDUSTRIALTEMPERATURERANGE
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%
Symbol
VIH
VIL
Parameter
Input HIGH Level
Test Conditions(1)
Guaranteed Logic HIGH Level
Min.
2
Typ.(2)
—
Max.
—
0.8
1
Unit
V
Input LOW Level
Guaranteed Logic LOW Level
VCC = Max.
—
—
—
—
—
—
—
—
—
—
V
IIH
Input HIGH Current(4)
Input LOW Current(4)
High Impedance Output Current
VI = 2.7V
VI = 0.5V
VI = 2.7V
VI = 0.5V
—
µA
µA
µA
IIL
VCC = Max.
—
1
IOZH
IOZL
II
VCC = Max.
—
1
(4)
(3-State Output Pins)
—
1
Input HIGH Current(4)
Clamp Diode Voltage
Input Hysteresis
VCC = Max., VI = VCC (Max.)
VCC = Min., IIN = –18mA
—
1
µA
V
VIK
VH
–0.7
200
0.01
–1.2
—
1
—
mV
mA
ICC
Quiescent Power Supply Current
VCC = Max.
VIN = GND or VCC
OUTPUTDRIVECHARACTERISTICS
Symbol
Parameter
OutputLOWCurrent
Output HIGH Current
OutputHIGHVoltage
Test Conditions(1)
Min.
16
Typ.(2)
48
Max.
—
Unit
mA
mA
V
(3)
IODL
IODH
VOH
VCC = 5V, VIN = VIH or VIL, VOUT = 1.5V
(3)
VCC = 5V, VIN = VIH or VIL, VOUT = 1.5V
-16
2.4
-48
—
VCC = Min
IOH = –15mA
3.3
—
VIN = VIH or VIL
VCC = Min
VOL
Output LOWVoltage
IOL = 12mA
—
0.3
0.5
V
VIN = VIH or VIL
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Not more than one output should be tested at one time. Duration of the test should not exceed one second.
4. The test limit for this parameter is ±5μA at TA = -55°C.
3
IDT74FCT2244AT/CT
FASTCMOSOCTALBUFFER/LINEDRIVER
INDUSTRIALTEMPERATURERANGE
POWERSUPPLYCHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ΔICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = 3.4V
—
0.5
2
mA
(3)
ICCD
Dynamic Power Supply
Current(4)
VCC = Max.
Outputs Open
VIN = VCC
VIN = GND
—
0.06
0.12
mA/
MHz
OEA or OEB = GND
One Input Toggling
50% Duty Cycle
IC
Total Power Supply Current(6)
VCC = Max.
Outputs Open
fi = 10MHz
VIN = VCC
VIN = GND
—
—
—
—
0.6
0.9
1.2
3.2
2.2
3.2
mA
50% Duty Cycle
OEA or OEB = GND
One Bit Toggling
VIN = 3.4V
VIN = GND
(5)
3.4
VCC = Max.
Outputs Open
fi = 2.5MHz
VIN = VCC
VIN = GND
50% Duty Cycle
OEA or OEB = GND
Four Bits Toggling
VIN = 3.4V
VIN = GND
11.4(5)
NOTES:
1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of ΔICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ΔICC DHNT + ICCD (fCP/2+ fiNi)
ICC = Quiescent Current
ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
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)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fi = Output Frequency
Ni = Number of Outputs at fi
All currents are in milliamps and all frequencies are in megahertz.
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE
74FCT2244AT
74FCT2244CT
Symbol
tPLH
Parameter
Condition(1)
CL = 50pF
RL = 500Ω
Min.(2)
Max.
Min.(2)
Max.
Unit
PropagationDelay
Dx to Ox
1.5
4.8
1.5
1.5
1.5
4.1
ns
tPHL
tPZH
OutputEnableTime
1.5
1.5
6.2
5.6
5.8
5.2
ns
ns
tPZL
tPHZ
OutputDisableTime
tPLZ
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
4
IDT74FCT2244AT/CT
FASTCMOSOCTALBUFFER/LINEDRIVER
INDUSTRIALTEMPERATURERANGE
TESTCIRCUITSANDWAVEFORMS
VCC
SWITCHPOSITION
7.0V
Test
Switch
Closed
Open
500W
Open Drain
Disable Low
Enable Low
VOUT
VIN
Pulse
Generator
D.U.T
.
All Other Tests
50pF
500W
T
R
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
L
C
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Octal Link
Test Circuits for All Outputs
3V
DATA
1.5V
INPUT
0V
LOW-HIGH-LOW
tH
tSU
1.5V
PULSE
3V
1.5V
0V
TIMING
INPUT
ASYNCHRONOUS CONTROL
tW
tREM
PRESET
CLEAR
ETC.
3V
1.5V
0V
HIGH-LOW-HIGH
PULSE
1.5V
SYNCHRONOUS CONTROL
PRESET
3V
1.5V
0V
CLEAR
tSU
tH
CLOCK ENABLE
ETC.
Pulse Width
Octal Link
Octal Link
Set-Up, Hold, and Release Times
ENABLE
DISABLE
3V
1.5V
0V
3V
SAME PHASE
CONTROL
INPUT
1.5V
0V
INPUT TRANSITION
tPLH
tPLH
tPHL
tPHL
tPZL
tPLZ
VOH
1.5V
VOL
OUTPUT
3.5V
1.5V
3.5V
VOL
VOH
OUTPUT
NORMALLY
LOW
SWITCH
CLOSED
0.3V
0.3V
3V
1.5V
0V
tPZH
tPHZ
OPPOSITE PHASE
INPUT TRANSITION
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
1.5V
0V
0V
Octal Link
Octal Link
Propagation Delay
Enable and Disable Times
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
5
IDT74FCT2244AT/CT
FASTCMOSOCTALBUFFER/LINEDRIVER
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
XXXX
XX
IDT
XX
FCT
Package
Device Type
Temp. Range
Small Outline IC
SOIC - Green
Quarter-size Small Outline Package
QSOP - Green
Thin Shrink Small Outline Package
SO
SOG
Q
QG
PG
Fast CMOS Octal Buffer/Line Driver
– 40°C to +85°C
2244AT
2244CT
74
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6
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