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IDT74FCT162H272CTPVB Datasheet(PDF) 1 Page - Integrated Device Technology

Part # IDT74FCT162H272CTPVB
Description  FAST CMOS 12-BIT SYNCHRONOUS BUS EXCHANGER
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT74FCT162H272CTPVB Datasheet(HTML) 1 Page - Integrated Device Technology

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Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
AUGUST 1996
©1996 Integrated Device Technology, Inc.
5.5
DSC-3071/3
IDT54/74FCT162H272AT/CT/ET
1
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST CMOS
12-BIT SYNCHRONOUS
BUS EXCHANGER
FEATURES:
• 0.5 MICRON CMOS Technology
• 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
• Balanced Output Drivers:
±24mA (commercial)
±16mA (military)
• Reduced system switching noise
• Typical VOLP (Output Ground Bounce) < 0.6V at
VCC = 5V, TA = 25
°C
• Bus Hold retains last active bus state during 3-state
• Eliminates the need for external pull up resistors
multiplexers for use in synchronous memory interleaving
applications. All registers have a common clock and use a
clock enable (
CExxx) on each data register to control data
sequencing. The output enables and mux select (
OEA, OEB
and SEL) are also under synchronous control allowing direc-
tion changes to be edge triggered events.
The tri-port bus exchanger has three 12-bit ports. Data may
be transferred between the A port and either/both of the B
ports. The clock enable (
CE1B, CE2B, CEA1B and CEA2B)
inputs control the data storage. Both B ports have a common
output enable (
OEB) to aid in synchronously loading the B
registers from the B port.
The FCT162H272AT/CT/ET have 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 FCT162H272AT/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 FCT162H272AT/CT/ET synchronous tri-port bus ex-
changers are high-speed, bidirectional,12-bit, registered, bus
FUNCTIONAL BLOCK DIAGRAM
A-1B
REGISTER
CLK
SEL
12
M
U
X
12
12
A1:12
1B1:12
12
12
12
12
12
2B1:12
CE1B
CEA1B
1
0
OEB
OEA
CE2B
CEA2B
1B-A
REGISTER
12
2B-A
REGISTER
A-2B
REGISTER
CONTROL
REGISTER
CE
D
Q
CE
D
Q
CE
D
Q
CE
D
Q
3071 drw 01


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