IDT74FCT162501AT(2009) 查看數據表（PDF） - Integrated Device Technology
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IDT74FCT162501AT Datasheet PDF : 7 Pages
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IDT74FCT162501AT/CT
FAST CMOS 18-BIT REGISTERED TRANSCEIVER
FAST CMOS
18-BIT REGISTERED
TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
IDT74FCT162501AT/CT
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)
• Balanced Output Drivers (±24mA)
• Reduced system switching noise
• Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V,
TA = 25°C
• Available in SSOP and TSSOP packages
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION:
The FCT162501T 18-bit registered transceivers are built using advanced
dual metal CMOS technology. These high-speed, low-power 18-bit registered
bus transceivers combine D-type latches and D-type flip-flops to allow data flow
in transparent, latched and clocked 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, the device
operates in transparent mode when LEAB is high. 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 is stored in the latch/flip-flop on the low-to-high transition of CLKAB. OEAB
is the output enable for the B port. Data flow from the B port to the A port is similar
but requires using OEBA, LEBA and CLKBA. Flow-through organization of
signal pins simplifies layout. All inputs are designed with hysteresis for improved
noise margin.
The FCT162501T has balanced output drive with current limiting resistors.
This offers low ground bounce, minimal undershoot, and controlled output fall
times–reducing the need for external series terminating resistors. The
FCT162501T is a plug-in replacement for the FCT16501T and ABT16501 for
on-board bus interface applications.
1
OEAB
30
CLKBA
28
LEBA
27
OEBA
55
CLKAB
LEAB 2
3
A1
C
C
D
D
54
B1
C
C
D
D
TO 17 OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2009 Integrated Device Technology, Inc.
SEPTEMBER 2009
DSC-2753/6
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