参数资料
型号: IDT74FCT162H272ATPA8
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 总线收发器
英文描述: FCT SERIES, 12-BIT EXCHANGER, TRUE OUTPUT, PDSO56
封装: TSSOP-56
文件页数: 1/8页
文件大小: 77K
代理商: IDT74FCT162H272ATPA8
1
IDT74FCT162H272AT/CT
FAST CMOS 12-BIT SYNCHRONOUS BUS EXCHANGER
INDUSTRIALTEMPERATURERANGE
NOVEMBER 2002
IDT74FCT162H272AT/CT
INDUSTRIAL TEMPERATURE RANGE
FAST CMOS 12-BIT
SYNCHRONOUS
BUS EXCHANGER
DESCRIPTION:
The FCT162H272T synchronous tri-port bus exchangers are high-speed,
bidirectional,12-bit,registered,busmultiplexersforuseinsynchronousmemory
interleaving applications. All registers have a common clock and use a clock
enable (
CExxx)oneachdataregistertocontroldatasequencing. Theoutput
enables and mux select (
OEA, OEB and SEL) are also under synchronous
control allowing direction 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,CEA1BandCEA2B)inputscontrolthedatastorage. BothBportshave
a common output enable (
OEB)toaidinsynchronouslyloadingtheBregisters
from the B port.
TheFCT162H272Thasbalancedoutputdrivewithcurrentlimitingresistors.
This offers low ground bounce, minimal undershoot, and controlled output fall
times-reducing the need for external series terminating resistors.
The FCT162H272T has "Bus Hold" which retains the input's last state
whenevertheinputgoestohighimpedance. Thisprevents"floating"inputsand
eliminates the need for pull-up/down resistors.
A-1B
REG ISTER
CLK
SEL
12
M
U
X
12
A1:12
1B1:12
12
2B1:12
CE1B
CEA1B
1
0
OEB
OEA
CE2B
CEA2B
1B-A
REG ISTER
12
2B-A
REGISTER
A-2B
REGISTER
C ONTROL
REG ISTER
CE
D
Q
CE
D
Q
CE
D
Q
CE
D
Q
FEATURES:
0.5 MICRON CMOS Technology
Typical tSK(o) (Output Skew) < 250ps
Low input and output leakage
≤≤≤≤≤ 1A (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
Bus Hold retains last active bus state during 3-state
Eliminates the need for external pull up resistors
Available in SSOP and TSSOP packages
FUNCTIONAL BLOCK DIAGRAM
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
2002 Integrated Device Technology, Inc.
DSC-3071/2
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