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Integrated Device Technology - 3.3V CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER

Numéro de référence IDT74H16501
Description 3.3V CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER
Fabricant Integrated Device Technology 
Logo Integrated Device Technology 





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IDT74H16501 fiche technique
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IDT74ALVCH16501
3.3V CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIALTEMPERATURERANGE
3.3V CMOS 18-BIT UNIVERSAL
BUS TRANSCEIVER WITH
3-STATE OUTPUTS
AND BUS-HOLD
IDT74ALVCH16501
FEATURES:
• 0.5 MICRON CMOS Technology
• Typical tSK(o) (Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• VCC = 3.3V ± 0.3V, Normal Range
• VCC = 2.7V to 3.6V, Extended Range
• VCC = 2.5V ± 0.2V
• CMOS power levels (0.4µ W typ. static)
• Rail-to-Rail output swing for increased noise margin
• Available in SSOP and TSSOP packages
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Suitable for heavy loads
APPLICATIONS:
• 3.3V high speed systems
• 3.3V and lower voltage computing systems
DESCRIPTION:
This 18-bit universal bus transceiver is built using advanced dual metal
CMOS technology. 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 the 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 data is stored in the latch/
flip-flop on the low-to-high transition of CLKAB. When OEAB is high, the outputs
are active. When OEAB is low, the outputs are in the high-impedance state.
DataflowforBtoAissimiliartothatofAtoBbutusesOEBA,LEBA,andCLKBA.
The output enables are complementary (OEAB is active high and OEBA is active
low).
The ALVCH16501 has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining speed
performance.
The ALVCH16501 has “bus-hold” which retains the inputs’ last state
whenever the input bus goes to a high impedance. This prevents floating inputs
and eliminates the need for pull-up/down resistors.
FUNCTIONAL BLOCK DIAGRAM
OEAB 1
CLKAB 55
LEAB 2
LEBA 28
CLKBA 30
OEBA 27
A1 3
1D
C1
CLK
1D
C1
CLK
54
B1
TO 17 OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
© 2004 Integrated Device Technology, Inc.
DataSheet4 U .com
1
JANUARY 2004
DSC-4738/2

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