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NXP Semiconductors |
INTEGRATED CIRCUITS
DATA SHEET
74AVCH16244
16-bit buffer/line driver;
3.6 V tolerant; 3-state
Product Specification
File under Integrated Circuits, IC24
2000 Mar 07
Philips Semiconductors
16-bit buffer/line driver; 3.6 V tolerant;
3-state
Product Specification
74AVCH16244
FEATURES
• Wide supply voltage range from 1.2 to 3.6 V
• Complies with JEDEC standard no. 8-1A/5/7
• CMOS low power consumption
• Input/output tolerant up to 3.6 V
• Dynamic Controlled Output (DCO) circuit dynamically
changes the output impedance, resulting in noise
reduction without speed degradation
• Low inductance multiple VCC and GND pins to minimize
noise and ground bounce
• Supports Live Insertion
• All data inputs have bus-hold.
DESCRIPTION
The 74AVCH16244 is a 16-bit non-inverting buffer/line
driver with 3-state outputs. The device can be used as four
4-bit buffers, two 8-bit buffers or one 16-bit buffer.
The 3-state outputs are controlled by the output enable
inputs nOE. A HIGH on nOE causes the outputs to assume
a high impedance OFF-state.
The 74AVCH16244 is designed to have an extremely fast
propagation delay and a minimum amount of power
consumption.
To ensure the high-impedance output state during
power-up or power-down, nOE should be tied to VCC
through a pull-up resistor (Live Insertion).
A Dynamic Controlled Output (DCO) circuitry is
implemented to support termination line drive during
transient (see Figs 1 and 2).
The 74AVCH16244 has active bus-hold circuitry to hold
unused or floating data inputs at a valid logic level. This
feature eliminates the need for external pull-up or
pull-down resistors.
handbook, h0alfpage
I OH
(mA)
1.8 V
−100
MNA506
2.5 V
−200
3.3 V
−300
01234
VOH (V)
Fig.1 Output voltage as a function of the
HIGH-level output current.
300
handbook, halfpage
IOL
(mA)
200
3.3 V
2.5 V
100
1.8 V
MNA507
0
01234
VOL (V)
Fig.2 Output voltage as a function of the
LOW-level output current.
2000 Mar 07
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