74LVC595AD datasheet(1/19 Pages) NXP

部件名	74LVC595AD

功能描述	8-bit serial-in/serial-out or parallel-out shift register; 3-state

PDF	19 Pages

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制造商	NXP [NXP Semiconductors]

网页	http://www.nxp.com

标志

1 / 19 page

1.

General description

The 74LVC595A is an 8-bit serial-in/serial or parallel-out shift register with a storage

register and 3-state outputs. Both the shift and storage register have separate clocks.

The input can be driven from either 3.3 V or 5 V devices. This feature allows the use of

this device in a mixed 3.3 V and 5 V environment.

This device is fully speciﬁed for partial Power-down applications using IOFF.

The IOFF circuitry disables the output, preventing the damaging backﬂow current through

the device when it is powered down.

Data is shifted on the positive-going transitions of the SHCP input. The data in the shift

register is transferred to the storage register on a positive-going transition of the STCP

input. If both clocks are connected together, the shift register will always be one clock

pulse ahead of the storage register.

The shift register has a serial input (DS) and a serial output (Q7S) for cascading

purposes. It is also provided with asynchronous reset input MR (active LOW) for all 8 shift

register stages. The storage register has 8 parallel 3-state bus driver outputs. Data in the

storage register appears at the output whenever the output enable input (OE) is LOW.

2.

Features

s 5 V tolerant inputs/outputs for interfacing with 5 V logic

s Wide supply voltage range from 1.2 V to 3.6 V

s CMOS low-power consumption

s Direct interface with TTL levels

s Balanced propagation delays

s All inputs have Schmitt-trigger action

s Complies with JEDEC standard JESD8-B/JESD36

s ESD protection:

x HBM JESD22-A114-D exceeds 2000 V

x CDM JESD22-C101-C exceeds 1000 V

s Speciﬁed from

−40 °C to +85 °C and −40 °C to +125 °C.

3.

Applications

s Serial-to-parallel data conversion

s Remote control holding register

74LVC595A

8-bit serial-in/serial-out or parallel-out shift register; 3-state

Rev. 01 — 29 May 2007

Product data sheet

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