74HCT123D NXP Semiconductors, 74HCT123D Datasheet

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74HCT123D

Manufacturer Part Number
74HCT123D
Description
IC, MONO MULTIVIBRATOR, 30NS, SOIC-16
Manufacturer
NXP Semiconductors
Datasheet

Specifications of 74HCT123D

Multivibrator Type
Retriggerable Monostable
Output Current
4mA
Logic Case Style
SOIC
No. Of Pins
16
Supply Voltage Range
4.5V To 5.5V
Propagation Delay
30ns
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
1. General description
2. Features
The 74HC123; 74HCT123 are high-speed Si-gate CMOS devices and are pin compatible
with Low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC123; 74HCT123 are dual retriggerable monostable multivibrators with output
pulse width control by three methods:
Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower
input rise and fall times.
The 74HC123; 74HCT123 is identical to the 74HC423; 74HCT423 but can be triggered
via the reset input.
I
I
I
I
I
I
1. The basic pulse time is programmed by selection of an external resistor (R
2. Once triggered, the basic output pulse width may be extended by retriggering the
3. An internal connection from nRD to the input gates makes it possible to trigger the
74HC123; 74HCT123
Dual retriggerable monostable multivibrator with reset
Rev. 04 — 16 June 2006
DC triggered from active HIGH or active LOW inputs
Retriggerable for very long pulses up to 100 % duty factor
Direct reset terminates output pulse
Schmitt-trigger action on all inputs except for the reset input
ESD protection:
Specified from 40 C to +85 C and from 40 C to +125 C
capacitor (C
gated active LOW-going edge input (nA) or the active HIGH-going edge input (nB). By
repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made
as long as desired. Alternatively an output delay can be terminated at any time by a
LOW-going edge on input nRD, which also inhibits the triggering.
circuit by a HIGH-going signal at input nRD as shown in the function table.
N
N
HBM EIA/JESD22-A114-C exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V
EXT
).
Product data sheet
EXT
) and

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74HCT123D Summary of contents

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Dual retriggerable monostable multivibrator with reset Rev. 04 — 16 June 2006 1. General description The 74HC123; 74HCT123 are high-speed Si-gate CMOS devices and are pin compatible with Low-power Schottky TTL (LSTTL). They are specified in compliance with ...

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... C to +125 C 74HC123DB +125 C 74HC123PW +125 C 74HC123BQ +125 C 74HCT123 74HCT123N +125 C 74HCT123D +125 C 74HCT123DB +125 C 74HCT123PW +125 C 74HC_HCT123_4 Product data sheet Dual retriggerable monostable multivibrator with reset Description DIP16 plastic dual in-line package; 16 leads (300 mil); long body SO16 plastic small outline package; 16 leads; ...

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Philips Semiconductors 4. Functional diagram Fig 1. Functional diagram 1RD 11 2RD Fig 2. Logic symbol 74HC_HCT123_4 Product data sheet 74HC123; 74HCT123 Dual retriggerable monostable multivibrator with reset 1REXT/CEXT 15 S ...

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Philips Semiconductors Fig 4. Logic diagram 74HC_HCT123_4 Product data sheet Dual retriggerable monostable multivibrator with reset Rev. 04 — 16 June 2006 ...

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Philips Semiconductors 5. Pinning information 5.1 Pinning 2CEXT 2REXT/CEXT Fig 5. Pin configuration for DIP16, SO16, 5.2 Pin description Table 2. Symbol 1A 1B 1RD 1Q 2Q 2CEXT 2REXT/CEXT GND 2A 2B 2RD 2Q 1Q 1CEXT 1REXT/CEXT V CC 74HC_HCT123_4 ...

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Philips Semiconductors 6. Functional description Table 3. Input nRD [ HIGH voltage level L = LOW voltage level X = don’t care = LOW-to-HIGH transition = HIGH-to-LOW transition [2] If the monostable was ...

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Philips Semiconductors 7. Limiting values Table 4. In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter GND ...

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Philips Semiconductors 9. Static characteristics Table 6. Static characteristics 74HC123 At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter amb V HIGH-state input voltage IH V LOW-state input voltage IL ...

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Philips Semiconductors Table 6. Static characteristics 74HC123 At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter V LOW-state output voltage OL I input leakage current LI I quiescent supply current ...

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Philips Semiconductors Table 7. Static characteristics 74HCT123 At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter V LOW-state output voltage OL I input leakage current LI I quiescent supply current CC I additional quiescent ...

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Philips Semiconductors Table 7. Static characteristics 74HCT123 At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter I additional quiescent supply CC current 10. Dynamic characteristics Table 8. Dynamic characteristics 74HC123 Voltages are referenced to ...

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Philips Semiconductors Table 8. Dynamic characteristics 74HC123 Voltages are referenced to GND (ground = 0 V); C For test circuit see Figure 12. Symbol Parameter t retrigger time nA external timing resistor EXT C external timing capacitor ...

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Philips Semiconductors Table 8. Dynamic characteristics 74HC123 Voltages are referenced to GND (ground = 0 V); C For test circuit see Figure 12. Symbol Parameter +125 C amb propagation delay PHL PLH ...

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Philips Semiconductors [ used to determine the dynamic power dissipation ( input frequency in MHz output frequency ...

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Philips Semiconductors Table 9. Dynamic characteristics 74HCT123 Voltages are referenced to GND (ground = 0 V); C For test circuit see Figure 12. Symbol Parameter t propagation delay PLH nRD, nA nRD (reset ...

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Philips Semiconductors [ used to determine the dynamic power dissipation ( input frequency in MHz output frequency ...

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Philips Semiconductors 11. Waveforms 50% nB input input nRD input t PLH Q output 50 output 50% t PHL Fig 9. Propagation delays from inputs (nA, nB, nRD) to outputs (nQ, nQ) and output ...

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Philips Semiconductors Fig 11. Output pulse control using reset input nRD Fig 12. Load circuitry for switching times Table 10. Supply 6.0 V 74HC_HCT123_4 Product data sheet Dual retriggerable monostable multivibrator with reset nB input ...

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Philips Semiconductors 12. Application information 12.1 Timing component connections The basic output pulse width is essentially determined by the values of the external timing components R (1) For minimum noise generation it is recommended to ground pins 6 (2CEXT) and ...

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Philips Semiconductors 12.3 Power-down considerations A large capacitor C the energy stored in this capacitor. When a system containing this device is powered-down or a rapid decrease of V damage, due to the capacitor discharging through the input protection diodes. ...

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Philips Semiconductors 13. Package outline DIP16: plastic dual in-line package; 16 leads (300 mil); long body pin 1 index 1 DIMENSIONS (inch dimensions are derived from the original mm dimensions UNIT max. ...

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Philips Semiconductors SO16: plastic small outline package; 16 leads; body width 3 pin 1 index 1 DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT max. 0.25 ...

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Philips Semiconductors SSOP16: plastic shrink small outline package; 16 leads; body width 5 pin 1 index 1 e DIMENSIONS (mm are the original dimensions) A UNIT max. 0.21 1.80 mm ...

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Philips Semiconductors TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4 pin 1 index 1 DIMENSIONS (mm are the original dimensions) A UNIT max. 0.15 0.95 mm ...

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Philips Semiconductors DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 x 3.5 x 0.85 mm terminal 1 index area terminal 1 index area ...

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Philips Semiconductors 14. Abbreviations Table 11. Abbreviations Acronym Abbreviation CMOS Complementary Metal Oxide Semiconductor DUT Device Under Test ESD ElectroStatic Discharge HBM Human Body Model LSTTL Low-power Schottky Transistor-Transistor Logic MM Machine Model 15. Revision history Table 12. Revision history ...

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Philips Semiconductors 16. Legal information 16.1 Data sheet status [1][2] Document status Product status Objective [short] data sheet Development Preliminary [short] data sheet Qualification Product [short] data sheet Production [1] Please consult the most recently issued document before initiating or ...

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Philips Semiconductors 18. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . ...

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