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74FCT640PO 데이터시트 PDF




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74FCT640PO 데이터시트, 핀배열, 회로
®
Integrated Device Technology, Inc.
FAST CMOS OCTAL
BIDIRECTIONAL
TRANSCEIVERS
IDT54/74FCT245/A/C
IDT54/74FCT640/A/C
IDT54/74FCT645/A/C
FEATURES:
• IDT54/74FCT245/640/645 equivalent to FASTspeed
and drive
• IDT54/74FCT245A/640A/645A 25% faster than FAST
• IDT54/74FCT245C/640C/645C 40% faster than FAST
• TTL input and output level compatible
• CMOS output level compatible
• IOL = 64mA (commercial) and 48mA (military)
• Input current levels only 5µA max.
• CMOS power levels (2.5mW typical static)
• Direction control and over-riding 3-state control
• Product available in Radiation Tolerant and Radiation
Enhanced versions
• Military product compliant to MIL-STD-883, Class B and
DESC listed
• Meets or exceeds JEDEC Standard 18 specifications
DESCRIPTION:
The IDT octal bidirectional transceivers are built using an
advanced dual metal CMOS technology. The IDT54/
74FCT245/A/C, IDT54/74FCT640/A/C and IDT54/74FCT645/
A/C are designed for asynchronous two-way communication
between data buses. The transmit/receive (T/R) input deter-
mines the direction of data flow through the bidirectional
transceiver. 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.
The IDT54/74FCT245/A/C and IDT54/74FCT645/A/C
transceivers have non-inverting outputs. The IDT54/
74FCT640/A/C has inverting outputs.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
T/R
A0
A1
A2
A3
A4
A5
A6
A7
NOTES:
1. FCT245, 645 are noninverting options.
2. FCT640 is the inverting option.
OE
B0
B1
B2
B3
B4
B5
B6
B7
2534 drw 02
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST is a registered trademark of National Semiconductor Co.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1992 Integrated Device Technology, Inc.
7.9
T/R
A0
A1
A2
A3
A4
A5
A6
A7
GND
1 20
2 19
3 18
4 P20-1 17
5
D20-1
SO20-2 16
6 & 15
7 E20-1 14
8 13
9 12
10 11
Vcc
OE
B0
B1
B2
B3
B4
B5
B6
B7
DIP/SOIC/CERPACK
TOP VIEW
INDEX
3 2 20 19
A2 4
1 18 B0
A3 5
17 B1
A4 6 L20-2 16 B2
A5 7
15 B3
A6 8
14 B4
9 10 11 12 13
LCC
TOP VIEW
2534 drw 01
MAY 1992
DSC-4201/3
1




74FCT640PO pdf, 반도체, 판매, 대치품
IDT54/74FCT245/A/C, IDT54/74FCT640/A/C, IDT54/74FCT645/A/C
FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
VLC = 0.2V; VHC = VCC – 0.2V
Symbol
Parameter
Test Conditions(1)
Min. Typ.(2) Max.
Unit
ICC
ICC
ICCD
IC
Quiescent Power Supply Current
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply Current(4)
Total Power Supply Current(6)
Vcc = Max.
VIN VHC; VIN VLC
Vcc = Max.
VIN = 3.4V(3)
Vcc = Max.
Outputs Open
OE = GND
T/R = GND or VCC
One Input Toggling
50% Duty Cycle
Vcc = Max.
Outputs Open
fi = 10MHz
50% Duty Cycle
T/R = OE = GND
One Bit Toggling
Vcc = Max.
Outputs Open
fi = 2.5MHz
50% Duty Cycle
T/R = OE = GND
Eight Bits Toggling
VIN VHC
VIN VLC
— 0.5 1.5 mA
— 0.5 2.0 mA
— 0.15 0.25 mA/MHz
VIN VHC
VIN VLC
(FCT)
VIN = 3.4V
VIN = GND
VIN VHC
VIN VLC
(FCT)
VIN = 3.4V
VIN = GND
2.0 4.0 mA
2.3 5.0
3.5 6.5(5)
5.5 14.5(5)
NOTES:
1. For conditions shown as Max. or Min., 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 the ICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ICC DHNT + ICCD (fCP/2 + fiNi)
ICC = Quiescent Current
ICC = 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 Output Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fi = Input Frequency
Ni = Number of Inputs at fi
All currents are in milliamps and all frequencies are in megahertz.
2534 tbl 04
7.9 4

4페이지










74FCT640PO 전자부품, 판매, 대치품
IDT54/74FCT245/A/C, IDT54/74FCT640/A/C, IDT54/74FCT645/A/C
FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS
ORDERING INFORMATION
IDT XX FCT X
Temperature
Range
Device
Type
XX
Package Process
MILITARY AND COMMERCIAL TEMPERATURE RANGES
Blank Commercial
B MIL-STD-883, Class B
P Plastic DIP
D CERDIP
SO Small Outline IC
L Leadless Chip Carrier
E CERPACK
245
640
645
245A
640A
645A
245C
640C
645C
Non-Inverting Buffer Transceiver
Octal Inverting Buffer Transceiver
Non-Inverting Buffer Transceiver
Fast Non-Inverting Buffer Transceiver
Fast Octal Inverting Buffer Transceiver
Fast Non-Inverting Buffer Transceiver
Super Fast Non-Inverting Buffer Transceiver
Super Fast Octal Inverting Buffer Transceiver
Super Fast Non-Inverting Buffer Transceiver
54 –55°C to +125°C
74 0°C to +70°C
2534 drw 03
7.9 7

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