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74ALVCH16501DL Fiches technique(PDF) 1 Page - NXP Semiconductors

No de pièce 74ALVCH16501DL
Description  18-bit universal bus transceiver; 3-state
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Fabricant  NXP [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo NXP - NXP Semiconductors

74ALVCH16501DL Fiches technique(HTML) 1 Page - NXP Semiconductors

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1.
General description
The 74ALVCH16501 is an 18-bit transceiver featuring non-inverting 3-state bus
compatible outputs in both send and receive directions. Data flow in each direction is
controlled by output enable (OEAB and OEBA), latch enable (LEAB and LEBA), and clock
(CPAB and CPBA) 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 CPAB 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 CPAB. When OEAB is HIGH, the outputs are active. When
OEAB is LOW, the outputs are in the high-impedance state.
Data flow for B-to-A is similar to that of A-to-B but uses OEBA, LEBA and CPBA. The
output enables are complimentary (OEAB is active HIGH, and OEBA is active LOW.
To ensure the high-impedance state during power-up or power-down, OEBA should be
tied to VCC through a pull-up resistor and OEAB should be tied to GND through a
pull-down resistor; the minimum value of the resistor is determined by the
current-sinking/current-sourcing capability of the driver.
Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic
level.
2.
Features and benefits
Wide supply voltage range from 1.2 V to 3.6 V
Complies with JEDEC standard JESD8-B
CMOS low power consumption
Direct interface with TTL levels
Current drive
±24 mA at V
CC = 3.0 V
Universal bus transceiver with D-type latches and D-type flip-flops capable of
operating in transparent, latched or clocked mode
All inputs have bus hold circuitry
Output drive capability 50
Ω transmission lines at 85 °C
3-state non-inverting outputs for bus-oriented applications
74ALVCH16501
18-bit universal bus transceiver; 3-state
Rev. 03 — 2 April 2010
Product data sheet


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