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IDT74FCT162501ATPAB

更新时间： 2024-11-28 23:12:47
品牌 Logo 应用领域
艾迪悌 - IDT /
页数 文件大小 规格书
9页 144K
描述
FAST CMOS 18-BIT REGISTERED TRANSCEIVER

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IDT74FCT162501ATPAB 数据手册

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IDT54/74FCT16501AT/CT/ET  
IDT54/74FCT162501AT/CT/ET  
IDT54/74FCT162H501AT/CT/ET  
FAST CMOS  
18-BIT REGISTERED  
TRANSCEIVER  
Integrated Device Technology, Inc.  
CMOS technology. These high-speed, low-power 18-bit reg-  
istered bus transceivers combine D-type latches and D-type  
flip-flopstoallowdataflowintransparent, latchedandclocked  
modes. Data flow in each direction is controlled by output-  
enable (OEAB and OEBA), latch enable (LEAB and LEBA)  
and clock (CLKAB and CLKBA) inputs. For A-to-B data flow,  
thedeviceoperatesintransparentmodewhenLEABisHIGH.  
When LEAB is LOW, the A data is latched if CLKAB is held at  
a HIGH or LOW logic level. If LEAB is LOW, the A bus data  
isstoredinthelatch/flip-flopontheLOW-to-HIGHtransitionof  
CLKAB. OEAB is the output enable for the B port. Data flow  
fromtheBporttotheAportissimilarbutrequiresusing OEBA,  
LEBA and CLKBA. Flow-through organization of signal pins  
simplifies layout. All inputs are designed with hysteresis for  
improved noise margin.  
FEATURES:  
• Common features:  
– 0.5 MICRON CMOS Technology  
– High-speed, low-power CMOS replacement for  
ABT functions  
– Typical tSK(o) (Output Skew) < 250ps  
– Low input and output leakage ≤ 1µA (max.)  
– ESD > 2000V per MIL-STD-883, Method 3015;  
> 200V using machine model (C = 200pF, R = 0)  
– Packages include 25 mil pitch SSOP, 19.6 mil pitch  
TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack  
– Extended commercial range of -40°C to +85°C  
• Features for FCT16501AT/CT/ET:  
– High drive outputs (-32mA IOH, 64mA IOL)  
– Power off disable outputs permit “live insertion”  
– Typical VOLP (Output Ground Bounce) < 1.0V at  
VCC = 5V, TA = 25°C  
The FCT16501AT/CT/ET are ideally suited for driving  
high-capacitance loads and low-impedance backplanes. The  
output buffers are designed with power off disable capability  
to allow "live insertion" of boards when used as backplane  
drivers.  
• Features for FCT162501AT/CT/ET:  
– Balanced Output Drivers: ±24mA (commercial),  
±16mA (military)  
The FCT162501AT/CT/ET have balanced output drive  
with current limiting resistors. This offers low ground bounce,  
minimalundershoot,andcontrolledoutputfalltimes–reducing  
the need for external series terminating resistors. The  
FCT162501AT/CT/ET are plug-in replacements for the  
FCT16501AT/CT/ET and ABT16501 for on-board bus inter-  
face applications.  
– Reduced system switching noise  
– Typical VOLP (Output Ground Bounce) < 0.6V at  
VCC = 5V,TA = 25°C  
• Features for FCT162H501AT/CT/ET:  
– Bus Hold retains last active bus state during 3-state  
– Eliminates the need for external pull up resistors  
The FCT162H501AT/CT/ET have "Bus Hold" which re-  
tains the input's last state whenever the input goes to high  
impedance. This prevents "floating" inputs and eliminates the  
need for pull-up/down resistors.  
DESCRIPTION:  
The FCT16501AT/CT/ET and FCT162501AT/CT/ET 18-  
bitregisteredtransceiversarebuiltusingadvanceddualmetal  
FUNCTIONAL BLOCK DIAGRAM  
OEAB  
CLKBA  
LEBA  
OEBA  
CLKAB  
LEAB  
C
C
B1  
A1  
D
D
C
D
C
D
TO 17 OTHER CHANNELS  
The IDT logo is a registered trademark of Integrated Device Technology, Inc.  
2547 drw 01  
MILITARY AND COMMERCIAL TEMPERATURE RANGES  
AUGUST 1996  
1996 Integrated Device Technology, Inc.  
5.10  
DSC-2547/8  
1
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