74HC573BQ,115 Nexperia

74HC573 74HCT573 Octal D-type transparent latch 3-state Rev. 8 10 September 2021 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 V . CC 2. Features and benefits Wide supply voltage range from 2.0 to 6.0 V CMOS low power dissipation High noise immunity 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 Latch-up performance exceeds 100 mA per JESD 78 Class II Level B Complies with JEDEC standards: JESD8C (2.7 V to 3.6 V) JESD7A (2.0 V to 6.0 V) ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Multiple package options Specified from -40 C to +85 C and from -40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC573D -40 C to +125 C SO20 plastic small outline package 20 leads SOT163-1 body width 7.5 mm 74HCT573D 74HC573PW -40 C to +125 C TSSOP20 plastic thin shrink small outline package 20 leads SOT360-1 body width 4.4 mm 74HCT573PW 74HC573BQ -40 C to +125 C DHVQFN20 plastic dual in-line compatible thermal enhanced SOT764-1 very thin quad flat package no leads 20 terminals 74HCT573BQ body 2.5 4.5 0.85 mmNexperia 74HC573 74HCT573 Octal D-type transparent latch 3-state 4. Functional diagram 2 D0 Q0 19 3 D1 Q1 18 4 D2 Q2 17 5 D3 Q3 16 LATCH 3-STATE 6 15 D4 1 to 8 OUTPUTS Q4 7 D5 14 Q5 8 D6 Q6 13 9 D7 12 Q7 LE 11 1 OE mna809 Fig. 1. Functional diagram D0 D1 D2 D3 D4 D5 D6 D7 D Q D Q D Q D Q D Q D Q D Q D Q LATCH LATCH LATCH LATCH LATCH LATCH LATCH LATCH 1 2 3 4 5 6 7 8 LE LE LE LE LE LE LE LE LE OE Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 001aae075 Fig. 2. Logic diagram 11 C1 1 EN1 1 2 19 1D OE 2 19 D0 Q0 3 18 3 18 D1 Q1 4 17 4 17 D2 Q2 5 16 5 16 D3 Q3 6 15 6 15 D4 Q4 7 14 7 14 D5 Q5 8 13 D6 Q6 8 13 9 12 D7 Q7 9 12 LE mna807 11 mna808 Fig. 3. Logic symbol Fig. 4. IEC logic symbol 74HC HCT573 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 8 10 September 2021 2 / 16