IDT74LVC2244AP [IDT]
Bus Driver, LVC/LCX/Z Series, 2-Func, 4-Bit, True Output, CMOS, PDSO20, TSSOP-20;
| 型号： | IDT74LVC2244AP |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Driver, LVC/LCX/Z Series, 2-Func, 4-Bit, True Output, CMOS, PDSO20, TSSOP-20 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总6页 (文件大小：73K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
3.3V CMOS OCTAL
IDT74LVC2244A
BUFFER/DRIVER WITH 3-
STATE OUTPUTS
AND 5 VOLT TOLERANT I/O
FEATURES:
DESCRIPTION:
• 0.5 MICRON CMOS Technology
This octal buffer/driver is built using advanced dual metal CMOS
technology. The LVC2244Adevice is organizedas two4-bitline drivers
with separate output-enable (OE) inputs. When OE is low, the device
passesdatafromtheAinputstotheYoutputs. WhenOEishigh,theoutputs
are inthe high-impedance state.
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• VCC = 3.3V ± 0.3V, Normal Range
• VCC = 2.7V to 3.6V, Extended Range
• CMOS power levels (0.4μ W typ. static)
• Rail-to-rail output swing for increased noise margin
• All inputs, outputs, and I/O are 5V tolerant
• Available in TSSOP package
Toensure the high-impedance state duringpoweruporpowerdown,
OE shouldbe tiedtoVccthrougha pullupresistor;the minimumvalue of
the resistoris determinedbythe current-sinkingcapabilityofthe driver.
TheLVC2244Ahasseriesresistorsinthedeviceoutputstructurewhich
willsignificantlyreduce line noise whenusedwithlightloads.This driver
has beendesignedtodrive ±12mAatthe designatedthresholdlevels.
Inputs canbedrivenfromeither3.3Vor5Vdevices.This featureallows
the use ofthis device as a translatorina mixed3.3V/5Vsystemenviron-
ment.
DRIVE FEATURES:
• Balanced Output Drivers: ±12mA
• Low switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
FUNCTIONALBLOCKDIAGRAM
19
1
1OE
2OE
9
18
11
2
2A1
2Y1
2Y2
2Y3
2Y4
1Y1
1Y2
1Y3
1Y4
1A1
7
5
16
14
13
15
17
4
6
8
2A2
2A3
2A4
1A2
1A3
3
12
1A4
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
FEBRUARY 2006
1
© 2006 Integrated Device Technology, Inc.
DSC-4644/3
IDT74LVC2244A
3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS
INDUSTRIALTEMPERATURERANGE
ABSOLUTEMAXIMUMRATINGS(1)
PINCONFIGURATION
Symbol
VTERM
TSTG
Description
Terminal Voltage with Respect to GND
Storage Temperature
Max
Unit
V
–0.5 to +6.5
–65 to +150
–50 to +50
–50
° C
mA
mA
20
19
18
17
16
15
14
13
12
11
1
VCC
2OE
1Y1
2A4
1Y2
2A3
1OE
1A1
2Y4
1A2
2Y3
1A3
IOUT
DC Output Current
IIK
IOK
Continuous Clamp Current,
VI < 0 or VO < 0
2
3
4
ICC
ISS
Continuous Current through each
VCC or GND
±100
mA
NOTE:
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.
5
6
1Y3
2A2
1Y4
2A1
2Y2
1A4
7
8
CAPACITANCE (TA = +25°C, F = 1.0MHz)
2Y1
9
Symbol
Parameter(1)
Conditions
VIN = 0V
VOUT = 0V
VIN = 0V
Typ.
Max. Unit
CIN
Input Capacitance
Output Capacitance
I/O Port Capacitance
4.5
6
8
8
pF
pF
pF
GND
10
COUT
CI/O
5.5
6.5
NOTE:
TSSOP
TOP VIEW
1. As applicable to the device type.
PINDESCRIPTION
Pin Names
Description
xOE
xAx
xYx
Output Enable Inputs
Data Inputs
3-State Outputs
(1)
FUNCTION TABLE (EACH BUFFER)
Inputs
Outputs
xOE
L
xAx
H
xYx
H
L
L
L
H
X
Z
NOTE:
1. H = HIGH Voltage Level
X = Don’t Care
L = LOW Voltage Level
Z = High-Impedance
2
IDT74LVC2244A
3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS
INDUSTRIALTEMPERATURERANGE
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
OperatingCondition:TA = –40°C to +85°C
Symbol
Parameter
Test Conditions
Min.
1.7
2
Typ.(1)
—
Max.
—
Unit
VIH
Input HIGH Voltage Level
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
V
—
—
VIL
Input LOW Voltage Level
Input Leakage Current
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
—
—
—
—
0.7
0.8
V
IIH
IIL
VCC = 3.6V
VI = 0 to 5.5V
—
—
5
µA
µ A
IOZH
IOZL
High Impedance Output Current
(3-State Output pins)
VCC = 3.6V
VO = 0 to 5.5V
—
—
10
IOFF
VIK
VH
Input/Output Power Off Leakage
Clamp Diode Voltage
VCC = 0V, VIN or VO ≤ 5.5V
—
—
—
50
µ A
V
VCC = 2.3V, IIN = –18mA
–0.7
–1.2
Input Hysteresis
VCC = 3.3V
VCC = 3.6V
—
—
100
—
—
10
mV
µA
ICCL
ICCH
ICCZ
Quiescent Power Supply Current
VIN = GND or VCC
(2)
3.6 ≤ VIN ≤ 5.5V
—
—
—
—
10
ΔICC
Quiescent Power Supply Current
Variation
One input at VCC - 0.6V, other inputs at VCC or GND
500
µ A
NOTES:
1. Typical values are at VCC = 3.3V, +25°C ambient.
2. This applies in the disabled state only.
OUTPUTDRIVECHARACTERISTICS
Symbol
Parameter
TestConditions(1)
VCC = 2.3V to 3.6V
Min.
VCC – 0.2
1.9
1.7
2.2
2
Max.
—
Unit
V
VOH
OutputHIGHVoltage
IOH = – 0.1mA
IOH = – 4mA
IOH = – 6mA
IOH = – 4mA
IOH = – 8mA
IOH = – 6mA
IOH = – 12mA
IOL = 0.1mA
IOL = 4mA
VCC = 2.3V
VCC = 2.7V
VCC = 3V
—
—
—
—
2.4
2
—
—
VOL
OutputLOWVoltage
VCC = 2.3V to 3.6V
VCC = 2.3V
—
0.2
0.4
0.55
0.4
0.6
0.55
0.8
V
—
IOL = 6mA
—
VCC = 2.7V
VCC = 3V
IOL = 4mA
—
IOL = 8mA
—
IOL = 6mA
—
IOL = 12mA
—
NOTE:
1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range.
TA = – 40°C to + 85°C.
3
IDT74LVC2244A
3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS
INDUSTRIALTEMPERATURERANGE
OPERATING CHARACTERISTICS, VCC = 3.3V ± 0.3V, TA = 25°C
Symbol
Parameter
Test Conditions
Typical
Unit
CPD
PowerDissipationCapacitanceperBuffer/DriverOutputsenabled
PowerDissipationCapacitanceperBuffer/DriverOutputsdisabled
CL = 0pF, f = 10Mhz
46
2
pF
CPD
SWITCHINGCHARACTERISTICS(1)
VCC = 2.7V
Max.
VCC = 3.3V ± 0.3V
Symbol
tPLH
Parameter
Min.
Min.
Max.
Unit
PropagationDelay
xAx to xYx
—
6.4
1.5
5.5
ns
ns
ns
ps
tPHL
tPZH
OutputEnableTime
xOE to xYx
—
—
—
8.1
7.3
—
1
7.1
6.8
500
tPZL
tPHZ
OutputDisableTime
1.5
—
tPLZ
xOE to xYx
(2)
tSK(o)
OutputSkew
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
4
IDT74LVC2244A
3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS
INDUSTRIALTEMPERATURERANGE
TESTCIRCUITSANDWAVEFORMS
VIH
VT
0V
SAME PHASE
INPUT TRANSITION
TESTCONDITIONS
Symbol VCC(1)=3.3V±0.3V VCC(1)=2.7V VCC(2)=2.5V±0.2V Unit
tPHL
tPHL
tPLH
tPLH
VOH
VT
VOL
OUTPUT
VLOAD
VIH
6
6
2 x Vcc
Vcc
V
V
2.7
1.5
300
300
50
2.7
1.5
300
300
50
VT
Vcc / 2
150
V
VIH
VT
0V
OPPOSITE PHASE
INPUT TRANSITION
VLZ
VHZ
CL
mV
mV
pF
150
LVC Link
30
Propagation Delay
VLOAD
Open
GND
VCC
DISABLE
ENABLE
VIH
VT
0V
CONTROL
INPUT
500Ω
tPZL
tPLZ
VIN
VOUT
(1, 2)
Pulse
D.U.T.
VLOAD/2
VLOAD/2
Generator
OUTPUT
NORMALLY
LOW
SWITCH
VLOAD
VT
VOL+VLZ
VOL
500Ω
RT
tPHZ
tPZH
CL
VOH
VOH-VHZ
OUTPUT
NORMALLY
HIGH
SWITCH
GND
VT
0V
LVC Link
0V
Test Circuit for All Outputs
LVC Link
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Enable and Disable Times
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
NOTES:
1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.
VIH
DATA
INPUT
SWITCHPOSITION
VT
0V
Test
Switch
VLOAD
GND
Open
tSU
tH
VIH
VT
0V
TIMING
INPUT
Open Drain
Disable Low
Enable Low
tREM
VIH
ASYNCHRONOUS
CONTROL
VT
Disable High
Enable High
0V
VIH
SYNCHRONOUS
CONTROL
All Other Tests
VT
tSU
0V
tH
VIH
LVC Link
VT
0V
Set-up, Hold, and Release Times
INPUT
tPLH1
tPHL1
VOH
VT
VOL
LOW-HIGH-LOW
OUTPUT 1
VT
PULSE
tSK (x)
tSK (x)
VOH
tW
VT
VOL
HIGH-LOW-HIGH
PULSE
OUTPUT 2
VT
LVC Link
tPLH2
tPHL2
Pulse Width
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
LVC Link
Output Skew - tSK(X)
NOTES:
1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs.
2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank.
5
IDT74LVC2244A
3.3VCMOSOCTALBUFFER/DRIVERWITH3-STATEOUTPUTS
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
LVC
Temp. Range
X
IDT
XX
XXXX
Device Type
XX
Package
Bus-Hold
Thin Shrink Small Outline Package
PG
2244A
Octal Buffer/Driver with 3-State Outputs, 12mA
Blank
74
No Bus-hold
–40°C to +85°C
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San Jose, CA 95138
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www.idt.com
6
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