74AUCH16245PAI [IDT]
TSSOP-48, Tube;
| 型号： | 74AUCH16245PAI |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | TSSOP-48, Tube |
| 文件： | 总8页 (文件大小：122K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
1.8V CMOS 16-BIT BUS
TRANSCEIVER WITH
3-STATE OUTPUTS AND
BUS-HOLD
IDT74AUCH16245
DESCRIPTION:
FEATURES:
This16-bitbustransceiverisbuiltusingadvancedCMOStechnology. The
AUCH16245is designedspecificallyforasynchronous communications be-
tweendatabuses. Thecontrolfunctionimplementationminimizesexternaltiming
requirements.
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• 1.8VOptimized
• 0.8V to 2.7V Operating Range
Thisdevicecanbeusedasone16-bittransceiverortwo8-bittransceivers.
ItallowsdatatransmissionfromAbustoBbusorfromBbustoAbus,depending
onthelogiclevelatthedirection-control(DIR)input. Theoutput-enable(OE)
inputcanbeusedtodisablethedevicesothatthebusesareeffectivelyisolated.
Thisdeviceisfullyspecifiedforpartialpower-downapplicationsusingIOFF.
TheIOFFcircuitrydisablestheoutputs,preventingdamagingcurrentbackflow
through the device when it is powered down.
The AUCH16245 is designed with a ±9mA output driver. This driver is
capableofdrivingamoderateloadwhilemaintainingspeedperformance.
To ensure the high-impedance state during power up or power down, OE
shouldbetiedtoVDD throughapull-upresistor;theminimumvalueoftheresistor
isdeterminedbythecurrent-sinkingcapabilityofthedriver.
• Inputs/outputs tolerant up to 3.6V
• Output drivers: ±9mA @ VDD = 2.3V
• Supports hot insertion
• Available in TSSOP, TVSOP, and VFBGA packages
APPLICATIONS:
• High performance, low voltage communications systems
• High performance, low voltage computing systems
The AUCH16245 data I/Os have bus-hold, which retains the last value
whenevertheI/Ogoestoahighimpedance. Thispreventsfloatinginputsand
eliminatestheneedforpull-up/pull-downresistors. Controlinputsdonothave
bus-holdandshouldnotbeallowedtofloat.
FUNCTIONALBLOCKDIAGRAM
1
24
1DIR
2DIR
48
25
1OE
1B1
2OE
47
36
1A1
2A1
2
13
2B1
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
OCTOBER 2002
1
© 2002 Integrated Device Technology, Inc.
DSC-5966/12
IDT74AUCH16245
1.8VCMOS16-BITBUSTRANSCEIVERWITH3-STATEOUTPUTSANDBUS-HOLD
INDUSTRIALTEMPERATURERANGE
PINOUTCONFIGURATION
1OE
NC
1A2
1A1
1A4
1A3
1A6
1A5
1A8
1A7
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2A8
2OE
NC
6
5
NC
NC
GND
GND
VDD
VDD
GND
GND
GND
GND
VDD
VDD
GND
GND
NC
NC
4
3
NC
1B1
1B3
1B5
1B7
2B2
2B4
2B6
2B8
NC
2
1
1DIR
A
1B2
B
1B4
C
1B6
D
1B8
E
2B1
F
2B3
G
2B5
H
2B7
J
2DIR
K
VFBGA
NOTE:
NC = No Internal Connection
56 BALL VFBGA PACKAGE LAYOUT
A
B
C
D
E
F
G
H
J
K
6
5
4
3
2
1
TOP VIEW
2
IDT74AUCH16245
INDUSTRIALTEMPERATURERANGE
1.8VCMOS16-BITBUSTRANSCEIVERWITH3-STATEOUTPUTSANDBUS-HOLD
ABSOLUTEMAXIMUMRATINGS(1)
PINCONFIGURATION
Symbol
Description
Max
Unit
VTERM
Terminal Voltage with Respect to GND
(all input and VDD terminals)
Terminal Voltage with Respect to GND
(any I/O or Output terminals in high-
impedance or power-off state)
Terminal Voltage with Respect to GND
(any I/O or Output terminals in high or
low state)
–0.5 to +3.6
V
1DIR
1
48
47
46
45
44
43
42
41
40
39
1OE
1A1
VTERM
VTERM
–0.5 to +3.6
–0.5 to +3.6
V
V
2
1B1
1B2
3
1A2
GND
1B3
4
GND
1A3
5
TSTG
IOUT
IIK
Storage Temperature
–65 to +150
±20
°C
mA
mA
1B4
6
1A4
Continuous DC Output Current
Continuous Clamp Current
VI > VDD
VI < 0
+50
VDD
1B5
7
VDD
1A5
–50
8
IOK
IDD
Continuous Clamp Current, VO < 0
Continuous Current through
each VDD or GND
–50
mA
mA
9
±100
1B6
1A6
ISS
GND
1B7
10
11
12
13
14
GND
1A7
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.
38
37
36
35
34
33
1B8
1A8
2B1
2A1
2B2
2A2
CAPACITANCE (TA = +25°C, f = 1.0MHz, VDD = 2.5V)
GND
2B3
15
16
17
18
19
20
21
22
23
24
GND
2A3
Symbol
Parameter
Conditions Typ. Max. Unit
CIN
Input Capacitance(1)
I/O Port Capacitance(2)
VIN = 0V
VIN = 0V
3
8
pF
pF
CI/O
2B4
2A4
32
31
30
29
28
27
26
25
NOTES:
1. Applies to the Control Inputs.
2. Applies to ports A and B.
VDD
2B5
VDD
2A5
PINDESCRIPTION
2B6
2A6
Pin Names
xOE
Description
GND
2B7
GND
2A7
3-StateOutputEnableInputs(ActiveLow)
xDIR
DirectionControlInputs
xAx
ASideInputsor3-StateOutputs(1)
BSideInputsor3-StateOutputs(1)
2B8
2A8
xBx
2DIR
2OE
NOTE:
1. These pins have "bus-hold". All other pins are standard outputs, inputs, or I/Os.
TSSOP/ TVSOP
TOP VIEW
(1)
FUNCTION TABLE (EACH 8-BIT SECTION)
Inputs
xOE
L
xDIR
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
Z
L
H
X
L
H
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedance
3
IDT74AUCH16245
1.8VCMOS16-BITBUSTRANSCEIVERWITH3-STATEOUTPUTSANDBUS-HOLD
INDUSTRIALTEMPERATURERANGE
RECOMMENDEDOPERATINGCHARACTERISTICS(1)
Symbol
Parameter
Test Conditions
Min.
Max.
Unit
VDD
SupplyVoltage
0.8
2.7
V
VDD = 0.8V
VDD
—
VDD = 1.1V to 1.3V
VDD = 1.4V to 1.6V
VDD = 1.65V to 1.95V
VDD = 2.3V to 2.7V
VDD = 0.8V
0.65 x VDD
—
VIH
VIL
Input HIGH Voltage Level
InputLOWVoltageLevel
0.65 x VDD
—
V
V
0.65 x VDD
—
1.7
—
—
—
—
—
0
—
0
VDD = 1.1V to 1.3V
VDD = 1.4V to 1.6V
VDD = 1.65V to 1.95V
VDD = 2.3V to 2.7V
0.35 x VDD
0.35 x VDD
0.35 x VDD
0.7
2.7
VDD
2.7
–0.7
–3
–5
–8
–9
0.7
3
VI
InputVoltage
V
V
VO
OutputVoltage
ActiveState
3-State
0
0
VDD = 0.8V
VDD = 1.1V
VDD = 1.4V
VDD = 1.65V
VDD = 2.3V
VDD = 0.8V
VDD = 1.1V
VDD = 1.4V
VDD = 1.65V
VDD = 2.3V
—
—
—
—
—
—
—
—
—
—
—
–40
IOH
HIGH Level Output Current
LOWLevelOutputCurrent
mA
mA
IOL
5
8
9
∆t/∆v
InputTransitionRiseorFallTime
OperatingFree-AirTemperature
5
ns/V
°C
TA
+85
NOTE:
1. All unused inputs of the device must be held at VDD or GND to ensure proper operation.
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE(1)
FollowingConditionsApplyUnlessOtherwiseSpecified:
Operating Conditions: TA = –40°C to +85°C
Symbol
IIH
Parameter
Test Conditions
Min.
—
Typ.
—
Max.
±10
±5
Unit
Input HIGH or LOW Current DataInputs
ControlInputs
VDD = 2.7V, VI = VDD or GND
µA
IIL
—
—
IOFF
IOZH(2)
IOZL(2)
IDDL
Input/OutputPowerOffLeakage
HighImpedanceOutputCurrent
(3-StateOutputPins)
VDD = 0V, VIN or VO ≤ 2.7V
—
—
±10
±10
±10
20
µA
µA
VDD = 2.7V
VO = VDD
—
—
VO = GND
—
—
Quiescent Power Supply Current
VDD = 0.8V to 2.7V
VIN = GND or VDD
—
—
µA
IDDH
IDDZ
NOTES:
1. All unused inputs of the device must be held at VDD or GND to ensure proper operation.
2. For the I/O ports, the parameters IOZH and IOZL include the input leakage current.
4
IDT74AUCH16245
INDUSTRIALTEMPERATURERANGE
1.8VCMOS16-BITBUSTRANSCEIVERWITH3-STATEOUTPUTSANDBUS-HOLD
BUS-HOLDCHARACTERISTICS
Symbol
Parameter(1)
Test Conditions
Min.
–10
10
Typ.
—
—
—
—
—
—
—
—
—
—
—
—
Max.
—
Unit
VDD = 1.1V
VDD = 1.4V
VDD = 1.65V
VDD = 2.3V
VI = 0.8V
VI = 0.35V
VI = 0.9V
VI = 0.47V
VI = 1.07V
VI = 0.57V
VI = 1.7V
VI = 0.7V
—
IBHH
IBHL
Bus-HoldInputSustainCurrent
–15
15
—
—
–20
20
—
µA
—
–40
40
—
—
VDD = 1.3V
VDD = 1.6V
VDD = 1.95V
VDD = 2.7V
—
±125
±175
±250
±400
IBHHO
IBHLO
Bus-Hold Input Overdrive Current
VI = 0 to VDD
—
µA
—
—
NOTE:
1. Pins with Bus-hold are identified in the pin description.
OUTPUTDRIVECHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
VDD = 0.8V - 2.7V IOH = –100µA
Min.
VDD - 0.1
—
Typ.
—
Max.
Unit
VOH
Output HIGH Voltage
—
—
VDD = 0.8V
IOH = –0.7mA
IOH = –3mA
IOH = –5mA
IOH = –8mA
IOH = –9mA
IOH = 100µA
IOL = 0.7mA
IOL = 3mA
0.55
—
VDD = 1.1V(2)
VDD = 1.4V(3)
VDD = 1.65V(4)
VDD = 2.3V(5)
VDD = 0.8V - 2.7V
VDD = 0.8V
0.8
1
—
V
—
—
1.2
1.8
—
—
—
—
—
VOL
Output LOWVoltage
—
0.2
—
—
0.25
—
VDD = 1.1V(2)
VDD = 1.4V(3)
VDD = 1.65V(4)
VDD = 2.3V(5)
—
0.3
0.4
0.45
0.6
V
IOL = 5mA
—
—
IOL = 8mA
—
—
IOH = 9mA
—
—
NOTES:
1. VIL and VIH must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS table for the appropriate VDD range. TA = -40°C to +85°C.
2. Demonstrates operation for nominal VDD = 1.2V.
3. Demonstrates operation for nominal VDD = 1.5V.
4. Demonstrates operation for nominal VDD = 1.8V.
5. Demonstrates operation for nominal VDD = 2.5V.
5
IDT74AUCH16245
1.8VCMOS16-BITBUSTRANSCEIVERWITH3-STATEOUTPUTSANDBUS-HOLD
INDUSTRIALTEMPERATURERANGE
OPERATING CHARACTERISTICS, TA = 25°C
Symbol Parameter
Test Conditions VDD = 0.8V
VDD = 1.2V
VDD = 1.5V
VDD = 1.8V
VDD = 2.5V Unit
CPD
PowerDissipationCapacitance
CL = 0pF
22
23
24
25
29
pF
OutputsEnabled
f = 10MHz
CPD
PowerDissipationCapacitance
OutputsDisabled
1
1
1
1
1
pF
SWITCHINGCHARACTERISTICS(1)
VDD = 0.8V VDD = 1.2V±0.1V VDD = 1.5V±0.1V
VDD = 1.8V±0.15V
VDD = 2.5V±0.2V
Symbol
tPLH
Parameter
Typ.
Min.
Max.
Min.
Max.
Min.
Typ.
Max.
Min.
Max.
Unit
PropagationDelay
5.6
0.5
3.1
0.5
2
0.5
1.5
2
0.4
1.9
ns
tPHL
xAx to xBx or xBx to xAx
tPZH
tPZL
OutputEnableTime
xOE to xAx or xBx
OutputDisableTime
xOE to xAx or xBx
10
0.7
0.8
4.6
6.8
0.7
0.8
3.1
5
0.7
0.8
2.1
3.4
3.1
4.8
0.7
0.5
2.6
2.9
ns
ns
tPHZ
tPLZ
12.8
NOTE:
1. See TEST CIRCUITS AND WAVEFORMS. TA = -40°C to +85°C.
6
IDT74AUCH16245
INDUSTRIALTEMPERATURERANGE
1.8VCMOS16-BITBUSTRANSCEIVERWITH3-STATEOUTPUTSANDBUS-HOLD
TESTCIRCUITSANDWAVEFORMS
TESTCONDITIONS(1)
Symbol
VLOAD
VT
VDD = 0.8V
2xVDD
VDD/2
100
VDD = 1.2V±0.1V
VDD = 1.5V±0.1V
VDD = 1.8V±0.15V
VDD = 2.5V±0.2V
Unit
V
2xVDD
VDD/2
100
100
2
2xVDD
VDD/2
100
100
2
2xVDD
VDD/2
150
150
1
2xVDD
VDD/2
150
V
VLZ
mV
mV
KΩ
pF
VHZ
100
150
RL
2
0.5
CL
15
15
15
30
30
VDD
VT
0V
VLOAD
Open
GND
VDD
SAME PHASE
INPUT TRANSITION
tPHL
tPHL
tPLH
tPLH
VOH
VT
VOL
RL
OUTPUT
VIN
VOUT
(1)
Pulse
D.U.T.
RT
Generator
VDD
VT
0V
OPPOSITE PHASE
INPUT TRANSITION
RL
CL
Propagation Delay
Test Circuits for All Outputs
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
NOTE:
DISABLE
ENABLE
VDD
VT
0V
CONTROL
INPUT
tPZL
tPLZ
1. Pulse Generator for All Pulses: Rate ≤ 10MHz; Slew Rate ≥ 1V/ns.
VLOAD/2
VT
VLOAD/2
OUTPUT
NORMALLY
LOW
SWITCHPOSITION
SWITCH
CLOSED
VOL + VLZ
VOL
Test
Switch
VLOAD
GND
tPHZ
tPZH
OUTPUT
NORMALLY
HIGH
Open Drain
Disable Low
Enable Low
VOH
VOH - VHZ
SWITCH
OPEN
VT
0V
0V
Disable High
Enable High
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
All Other Tests
Open
Enable and Disable Times
7
IDT74AUCH16245
1.8VCMOS16-BITBUSTRANSCEIVERWITH3-STATEOUTPUTSANDBUS-HOLD
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
XX
XX
IDT
XX
AUC
X
XX
XXX
Package
Grade
Device Type
Temp. Range
Bus-Hold
Family
Industrial Temperature Range
I
BV
PA
PF
Very Fine Pitch Ball Grid Array
Thin Shrink Small Outline Package
Thin Very Small Outline Package
16-Bit Bus Transceiver with 3-State Outputs
245
16
H
Double-Density
Bus-Hold
74
– 40°C to +85°C
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fax: 408-284-2775
for Tech Support:
logichelp@idt.com
www.idt.com
8
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