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HD74HC423AP中文资料

HD74HC423A

Dual Retriggerable Monostable Multivibrators

REJ03D0626-0200

(Previous ADE-205-505)

Rev.2.00

Mar 30, 2006 Description

This multivibrator features output-pulse-duration control by two methods. The basic pulse duration is programmed by selection of external resistance and capacitance values. Once triggered, the basic pulse duration may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear. The B input is a Schmitt trigger enabling jitter-free triggering from input signals with slow transition rates. Features

? High Speed Operation

? High Output Current: Fanout of 10 LSTTL Loads

? Wide Operating Voltage: V CC = 2 to 6 V

? Low Input Current: 1 μA max

? Low Quiescent Supply Current

? Ordering Information

Part Name Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74HC423AP DILP-16

pin PRDP0016AE-B

(DP-16FV)

P —

HD74HC423AFPEL SOP-16 pin (JEITA) PRSP0016DH-B

(FP-16DAV)

FP EL (2,000 pcs/reel)

Note: Please consult the sales office for the above package availability. Function Table

Pin Arrangement

Logic Diagram (1/2)

Absolute Maximum Ratings

Unit Item Symbol

Ratings

Supply voltage range V CC–0.5 to 7.0 V

Input / Output voltage V IN, V OUT–0.5 to V CC +0.5 V

Input / Output diode current I IK, I OK±20 mA Output current I OUT±25 mA

V CC, GND current I CC or I GND±50 mA

mW Power dissipation P T 500

Storage temperature Tstg –65 to +150 °C

Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.

Recommended Operating Conditions

Item Symbol Ratings Unit Conditions

Supply voltage

V CC 2 to 6 V

Input / Output voltage V IN , V OUT 0 to V CC V Operating temperature Ta –40 to 85 °C

0 to 1000 V CC = 2.0 V

0 to 500 V CC = 4.5 V

Input rise / fall time *1

t r , t f

0 to 400

ns V CC = 6.0 V

Note: 1. This item guarantees maximum limit when one input switches.

Waveform: Refer to test circuit of switching characteristics.

Electrical Characteristics

Ta = 25°C

Ta = –40 to+85°C

Item Symbol V CC (V) Min Typ Max Min Max Unit

Test Conditions

2.0 1.5 — — 1.5 — 4.5

3.15 — — 3.15 —

V IH 6.0 4.2 — — 4.2 —

2.0 — — 0.5 — 0.5 4.5 — — 1.35 — 1.35 Input voltage V IL

6.0 — — 1.8 — 1.8 V 2.0 1.9 2.0 — 1.9 — 4.5 4.4 4.5 — 4.4 — 6.0 5.9 6.0 — 5.9 — I OH = –20 μA

4.5 4.18 — — 4.13 — I OH = –4 mA V OH

6.0 5.68 — — 5.63 —

V Vin = V IH or V IL I OH = –5.2 mA

2.0 — 0.0 0.1 — 0.1 4.5 — 0.0 0.1 — 0.1 6.0 — 0.0 0.1 — 0.1 I OL = 20 μA 4.5 — — 0.26 — 0.33 I OH = 4 mA Output voltage V OL

6.0 — — 0.26 — 0.33

V Vin = V IH or V IL I OH = 5.2 mA Input current

Iin 6.0 — — ±0.1 — ±1.0 μA Vin = V CC or GND Standby state — — 130 — 220 I OUT = 0 μA

Quiescent Supply current Active

state I CC 6.0 — — 130 — 220

μA Vin = V CC or GND

Rext / Cext =

0.5 V CC

Switching Characteristics (C L = 50 pF, Input t r = t f = 6 ns)

Ta = 25°C

Ta = –40 to +85°C

Item Symbol V CC (V) Min Typ Max Min Max Unit

Test Conditions

2.0 — — 210 — 265 4.5 — 20 42 — 53

t PLH 6.0 — — 36 — 45

ns A or B to Q 2.0 — — 240 — 300 4.5 — 21 48 — 60

t PHL

6.0 — — 41 — 51 ns A or B to Q 2.0 — — 170 — 215 4.5 — 17 34 — 43 t PHL

6.0 — — 29 —

ns Clear to Q 2.0 — — 180 — 225 4.5 — 15 36 — 45 Propagation delay time t PLH

6.0 — — 31 — 38

ns Clear to Q 2.0 150 — — 190 — 4.5 30 6 — 38 — Pulse width t w

6.0 26 — — 33

—

ns A, B, Clear 2.0 0 — — 5 — 4.5 0 –3 — 5 —

Removal time t rem

6.0 0 — — 5 —

ns Clear 2.0 — 1.5 — — — μs Rext = 6 k ? 4.5 — 450 — — — Minimum output

pulse width t WQ (min)

6.0 — 380 — —

—

ns Cext = 28 pF Rext = 2 k ?

Output pulse width t WQ 4.5 — 1.0 — —

— ms Cext = 0.1 μF, Rext = 10 k ? 2.0 — — 75 — 95 4.5 — 5 15 — 19 Output rise/fall time

t TLH t THL 6.0 — — 13 —

ns — — — 20 — 20 Pins 7 & 15 Input capacitance

Cin

— — 5 10 — 10 pF Other pins

Caution in use: In order to prevent any malfunctions due to noise, connect a highfrequency performance capacitor

between V CC and GND, and keep the wiring between the external components and Cext, Rext/Cext pins as short as possible.

Test Circuit

Application Data

Package Dimensions

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