54FCT245CTDSOB8 [IDT]

Bus Driver/Transceiver;
54FCT245CTDSOB8
型号: 54FCT245CTDSOB8
厂家: INTEGRATED DEVICE TECHNOLOGY    INTEGRATED DEVICE TECHNOLOGY
描述:

Bus Driver/Transceiver

文件: 总8页 (文件大小:189K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
FAST CMOS OCTAL  
IDT54/74FCT245T/AT/CT  
BIDIRECTIONAL  
TRANSCEIVER  
FEATURES:  
DESCRIPTION:  
• Std., A, and C grades  
TheIDToctalbidirectionaltransceiversarebuiltusinganadvanceddual  
• Low input and output leakage 1µA (max.)  
• CMOS power levels  
• True TTL input and output compatibility:  
– VOH = 3.3V (typ.)  
metalCMOStechnology. TheFCT245Tisdesignedforasynchronoustwo-  
waycommunicationbetweendatabuses. Thetransmit/receive(T/R)input  
determinesthedirectionofdataflowthroughthebidirectionaltransceiver.  
Transmit (active high) enables data from A ports to B ports, and receive  
(active low) from B ports to A ports. The output enable (OE) input, when  
high, disables both A and B ports by placing them in high Z condition.  
– VOL = 0.3V (typ.)  
• High Drive outputs (-15mA IOH, 64mA IOL)  
• Meets or exceeds JEDEC standard 18 specifications  
• Military product compliant to MIL-STD-883, Class B and DESC  
listed (dual marked)  
• Power off disable outputs permit "live insertion"  
• Available in the following packages:  
– Industrial: SOIC, SSOP, QSOP, TSSOP  
– Military: CERDIP, LCC  
FUNCTIONALBLOCKDIAGRAM  
T/R  
OE  
0
A
0
B
1
A
1
B
2
A
2
B
3
A
3
B
4
A
4
B
5
A
5
B
6
A
6
B
7
A
B7  
IDTandtheIDTlogoareregisteredtrademarksofIntegratedDeviceTechnology,Inc.  
MILITARY AND INDUSTRIAL TEMPERATURE RANGES  
DECEMBER 2016  
1
DSC-5510/7  
IDT54/74FCT245T/AT/CT  
FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER  
MILITARYANDINDUSTRIALTEMPERATURERANGES  
PINCONFIGURATION  
V
CC  
INDEX  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
1
T/R  
OE  
A0  
A1  
A2  
A3  
2
3
4
3
2
20 19  
18  
B
B
B
B
0
1
2
3
1
4
5
6
7
8
A
2
3
4
B0  
B1  
B2  
B3  
B4  
17  
16  
15  
14  
A
5
A
A
A
A4  
A5  
A6  
A7  
6
5
6
B
B
B
B
4
5
6
7
7
9
10 11 12 13  
8
9
GND  
10  
LCC  
TOP VIEW  
CERDIP/ SOIC/ SSOP/ QSOP/ TSSOP  
TOP VIEW  
ABSOLUTEMAXIMUMRATINGS(1)  
PINDESCRIPTION  
Symbol  
Description  
Max  
Unit  
V
Pin Names  
Description  
(2)  
VTERM  
Terminal Voltage with Respect to GND  
–0.5 to +7  
OE  
T/R  
Output Enable Inputs (Active LOW)  
Transmit/Recieve Input  
(3)  
VTERM  
Terminal Voltage with Respect to GND –0.5 to VCC+0.5  
V
TSTG  
IOUT  
Storage Temperature  
DC Output Current  
–65 to +150  
–60 to +120  
°C  
mA  
A0 - A7  
B0 - B7  
Side A Inputs or 3-State Outputs  
Side B Inputs or 3-State Outputs  
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.  
FUNCTIONTABLE(1)  
Inputs  
2. Inputs and Vcc terminals only.  
3. Output and I/O terminals only.  
OE  
L
T/R  
L
Outputs  
Bus B Data to Bus A  
Bus A Data to Bus B  
HighZState  
L
H
H
X
CAPACITANCE (TA = +25°C, F = 1.0MHz)  
NOTE:  
1. H = HIGH Voltage Level  
X = Don’t Care  
L = LOW Voltage Level  
Z = High Impedance  
Symbol  
Parameter(1)  
Input Capacitance  
Output Capacitance  
Conditions  
Typ.  
Max. Unit  
CIN  
VIN = 0V  
6
8
10  
12  
pF  
pF  
COUT  
VOUT = 0V  
NOTE:  
1. This parameter is measured at characterization but not tested.  
2
IDT54/74FCT245T/AT/CT  
MILITARYANDINDUSTRIALTEMPERATURERANGES  
FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER  
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%; Military: TA = –55°C to +125°C, VCC = 5.0V ±10%  
Symbol  
VIH  
Parameter  
Input HIGH Level  
Test Conditions(1)  
Guaranteed Logic HIGH Level  
Min.  
2
Typ.(2)  
Max.  
0.8  
1
Unit  
V
VIL  
Input LOW Level  
Guaranteed Logic LOW Level  
VCC = Max.  
V
IIH  
Input HIGH Current(4)  
Input LOW Current(4)  
High Impedance Output Current  
(3-State output pins)(4)  
Input HIGH Current(4)  
ClampDiodeVoltage  
Input Hysteresis  
VI = 2.7V  
VI = 0.5V  
VO = 2.7V  
VO = 0.5V  
µA  
µA  
µA  
IIL  
VCC = Max.  
1
IOZH  
IOZL  
VCC = Max  
1
1
II  
VCC = Max., VI = VCC (Max.)  
VCC = Min, IIN = -18mA  
1
µA  
V
VIK  
VH  
ICC  
–0.7  
200  
0.01  
–1.2  
1
mV  
mA  
Quiescent Power Supply Current  
VCC = Max., VIN = GND or VCC  
OUTPUTDRIVECHARACTERISTICS  
Symbol  
Parameter  
Test Conditions(1)  
Min.  
Typ.(2)  
Max.  
Unit  
VOH  
Output HIGH Voltage  
VCC = Min  
VIN = VIH or VIL  
IOH = –6mA MIL  
IOH = –8mA IND  
IOH = –12mA MIL  
IOH = –15mA IND  
IOL = 48mA MIL  
IOL = 64mA IND  
2.4  
3.3  
V
2
3
VOL  
IOS  
OutputLOWVoltage  
Short Circuit Current  
VCC = Min  
VIN = VIH or VIL  
VCC = Max., VO = GND(3)  
0.3  
0.55  
–225  
V
–60  
–120  
mA  
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
IDT54/74FCT245T/AT/CT  
FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER  
MILITARYANDINDUSTRIALTEMPERATURERANGES  
POWERSUPPLYCHARACTERISTICS  
Symbol  
Parameter  
Test Conditions(1)  
Min.  
Typ.(2)  
Max.  
Unit  
ΔICC  
Quiescent Power Supply Current  
TTL Inputs HIGH  
VCC = Max.  
VIN = 3.4V(3)  
0.5  
2
mA  
ICCD  
Dynamic Power Supply  
Current(4)  
VCC = Max.  
Outputs Open  
VIN = VCC  
VIN = GND  
0.15  
0.25  
mA/  
MHz  
OE = T/R = GND  
One Input Toggling  
50% Duty Cycle  
IC  
Total Power Supply Current(6)  
VCC = Max.  
Outputs Open  
fi = 10MHz  
VIN = VCC  
VIN = GND  
1.5  
1.8  
3
3.5  
4.5  
mA  
50% Duty Cycle  
OE = T/R = GND  
One Bit Toggling  
VIN = 3.4V  
VIN = GND  
(5)  
6
VCC = Max.  
Outputs Open  
fi = 2.5MHz  
VIN = VCC  
VIN = GND  
50% Duty Cycle  
OE = T/R = GND  
Eight Bits Toggling  
VIN = 3.4V  
VIN = GND  
5
14(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.  
4
IDT54/74FCT245T/AT/CT  
MILITARYANDINDUSTRIALTEMPERATURERANGES  
FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER  
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE-INDUSTRIAL  
74FCT245AT  
74FCT245CT  
Symbol  
tPLH  
Parameter  
PropagationDelay  
A to B, B to A  
Condition(1)  
CL = 50pF  
RL = 500Ω  
Min.(2)  
Max.  
Min.(2)  
Max.  
Unit  
1.5  
1.5  
1.5  
1.5  
1.5  
4.6  
1.5  
1.5  
1.5  
1.5  
1.5  
4.1  
ns  
tPHL  
tPZH  
tPZL  
OutputEnableTime  
OE to A or B  
OutputDisableTime  
6.2  
5
5.8  
4.8  
5.8  
4.8  
ns  
ns  
ns  
ns  
tPHZ  
tPLZ  
OE to A or B  
OutputEnableTime  
T/R to A or B(3)  
OutputDisableTime  
T/R to A or B(3)  
tPZH  
tPZL  
6.2  
5
tPHZ  
tPLZ  
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE-MILITARY  
54FCT245T  
54FCT245AT  
54FCT245CT  
Symbol  
tPLH  
Parameter  
PropagationDelay  
A to B, B to A  
Condition(1)  
CL = 50pF  
RL = 500Ω  
Min.(2)  
Max.  
Min.(2)  
Max.  
Min.(2)  
Max.  
Unit  
1.5  
1.5  
1.5  
1.5  
1.5  
7.5  
1.5  
1.5  
1.5  
1.5  
1.5  
4.9  
1.5  
1.5  
1.5  
1.5  
1.5  
4.5  
ns  
tPHL  
tPZH  
tPZL  
OutputEnableTime  
OE to A or B  
OutputDisableTime  
10  
10  
10  
10  
6.5  
6
6.2  
5.2  
6.2  
5.2  
ns  
ns  
ns  
ns  
tPHZ  
tPLZ  
OE to A or B  
OutputEnableTime  
T/R to A or B(3)  
OutputDisableTime  
T/R to A or B(3)  
tPZH  
tPZL  
6.5  
6
tPHZ  
tPLZ  
NOTES:  
1. See test circuit and waveforms.  
2. Minimum limits are guaranteed but not tested on Propagation Delays.  
3. This parameter is guaranteed but not tested.  
5
IDT54/74FCT245T/AT/CT  
FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER  
MILITARYANDINDUSTRIALTEMPERATURERANGES  
TESTCIRCUITSANDWAVEFORMS  
V
CC  
SWITCHPOSITION  
7.0V  
Test  
Switch  
Closed  
Open  
500W  
Open Drain  
Disable Low  
Enable Low  
V
OUT  
V
IN  
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  
0V  
INPUT  
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  
t
PLH  
t
PHL  
PHL  
t
PZL  
tPLZ  
VOH  
OUTPUT  
3.5V  
1.5V  
3.5V  
1.5V  
OUTPUT  
NORMALLY  
LOW  
SWITCH  
CLOSED  
VOL  
tPLH  
t
0.3V  
0.3V  
VOL  
3V  
1.5V  
0V  
tPZH  
tPHZ  
OPPOSITE PHASE  
INPUT TRANSITION  
VOH  
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.  
6
IDT54/74FCT245T/AT/CT  
MILITARYANDINDUSTRIALTEMPERATURERANGES  
FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER  
ORDERINGINFORMATION  
XXXX  
XX  
X
XX  
FCT  
X
X
Package  
Process  
Device Type  
Temp. Range  
Tube  
Tape and Reel  
Blank  
8
Green  
G
Blank  
B
Industrial  
MIL-STD-883, Class B  
Industrial Options  
Small Outline IC (PSG20)  
SO  
PY  
Q
Shrink Small Outline Package (PYG20)  
Quarter-size Small Outline Package (PCG20)  
Thin Shrink Small Outline Package (PGG20)  
PG  
Military Options  
D
L
CERDIP (CD20)  
Leadless Chip Carrier (LC20)  
245T  
Fast CMOS Octal Bidirectional Transceiver  
245AT  
245CT  
54  
74  
55°C to +125°C  
40°C to +85°C  
DatasheetDocumentHistory  
09/29/2009  
12/12/2016  
Pg. 7  
Pg. 7  
Updated the ordering information by removing the "IDT" notation and non RoHS part.  
UpdatedtheorderinginformationbyaddingdetailedpackageinformationandTape&Reel.  
7
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