latch. 74HCT573D Datasheet

74HCT573D Datasheet PDF

Part 74HCT573D
Description Octal D-type transparent latch
Feature 74HCT573D; 74HC573; 74HCT573 Octal D-type transparent latch; 3-state Rev. 7 — 4 March 2016 Product data sheet .
Manufacture nexperia
Datasheet
Download 74HCT573D Datasheet




74HCT573D
74HC573; 74HCT573
Octal D-type transparent latch; 3-state
Rev. 7 — 4 March 2016
Product data sheet
1. General description
The 74HC573; 74HCT573 is an 8-bit D-type transparent latch with 3-state outputs. The
device features latch enable (LE) and output enable (OE) inputs. When LE is HIGH, data
at the inputs enter the latches. In this condition the latches are transparent, a latch output
will change each time its corresponding D-input changes. When LE is LOW the latches
store the information that was present at the inputs a set-up time preceding the
HIGH-to-LOW transition of LE. A HIGH on OE causes the outputs to assume a
high-impedance OFF-state. Operation of the OE input does not affect the state of the
latches. Inputs include clamp diodes. This enables the use of current limiting resistors to
interface inputs to voltages in excess of VCC.
2. Features and benefits
Input levels:
For 74HC573: CMOS level
For 74HCT573: TTL level
Inputs and outputs on opposite sides of package allowing easy interface with
microprocessors
Useful as input or output port for microprocessors and microcomputers
3-state non-inverting outputs for bus-oriented applications
Common 3-state output enable input
Multiple package options
Complies with JEDEC standard no. 7 A
ESD protection:
HBM JESD22-A114F exceeds 2 000 V
MM JESD22-A115-A exceeds 200 V
Specified from 40 C to +85 C and from 40 C to +125 C



74HCT573D
Nexperia
74HC573; 74HCT573
Octal D-type transparent latch; 3-state
3. Ordering information
Table 1. Ordering information
Type number Package
Temperature range
74HC573D 40 C to +125 C
74HCT573D
74HC573DB 40 C to +125 C
74HCT573DB
74HC573PW 40 C to +125 C
74HCT573PW
74HC573BQ 40 C to +125 C
74HCT573BQ
Name
SO20
SSOP20
TSSOP20
DHVQFN20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
plastic shrink small outline package; 20 leads;
body width 5.3 mm
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
plastic dual in-line compatible thermal enhanced very
thin quad flat package; no leads; 20 terminals;
body 2.5 4.5 0.85 mm
Version
SOT163-1
SOT339-1
SOT360-1
SOT764-1
4. Functional diagram
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Fig 1. Functional diagram
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74HC_HCT573
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 4 March 2016
© Nexperia B.V. 2017. All rights reserved
2 of 20



74HCT573D
Nexperia
74HC573; 74HCT573
Octal D-type transparent latch; 3-state
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Fig 2. Logic diagram


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Fig 3. Logic symbol

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Fig 4. IEC logic symbol
74HC_HCT573
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 4 March 2016
© Nexperia B.V. 2017. All rights reserved
3 of 20







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