74HC4538-Q100

Dual retriggerable precision monostable multivibrator

The 74HC4538-Q100 is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has two trigger/retrigger inputs (nA and nB), a direct reset input (nCD), two complementary outputs (nQ and nQ), and two pins (nREXT/CEXT and nCEXT) for connecting the external timing components C_EXT and R_EXT. Typical pulse width variation over temperature range is ± 0.2 %. The device may be triggered by either the positive or the negative edges of the input pulse. The duration and accuracy of the output pulse are determined by the external timing components C_EXT and R_EXT. The output pulse width (T_W) is equal to 0.7 × R_EXT × C_EXT. The linear design techniques guarantee precise control of the output pulse width. A LOW level at nCD terminates the output pulse immediately. Schmitt-trigger action in the trigger inputs makes the circuit highly tolerant to slower rise and fall times. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V_CC.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

Automotive product qualification in accordance with AEC-Q100 (Grade 1)
- Specified from -40 °C to +85 °C and from -40 °C to +125 °C
Wide supply voltage range from 2.0 to 6.0 V
CMOS low power dissipation
CMOS input levels
High noise immunity
Tolerant of slow trigger rise and fall times
Separate reset inputs
Triggering from falling or rising edge
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:
- MIL-STD-883, method 3015 exceeds 2000 V
- HBM JESD22-A114F exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
74HC4538D-Q100	Production	2.0 - 6.0	CMOS	± 5.2	27	low	-40~125	77	2.5	35	SO16
74HC4538PW-Q100	Production	2.0 - 6.0	CMOS	± 5.2	27	low	-40~125	109	1.0	37	TSSOP16

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74HC4538D-Q100	SO16 (SOT109-1)		SO-SOJ-REFLOW WAVE_BG-BD-1	Reel 13" Q1/T1	Active	74HC4538D	74HC4538D-Q100,118 ( 9352 988 58118 )
74HC4538PW-Q100	TSSOP16 (SOT403-1)		SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	HC4538	74HC4538PW-Q100,11 ( 9352 988 59118 )

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	RoHS / RHF	Leadfree conversion date	EFR	IFR	MTBF (hour)	MSL	MSL leadfree
74HC4538D-Q100	74HC4538D-Q100,118	74HC4538D-Q100		Always Pb-free	40.0	1.4	7.46E8	1	1
74HC4538PW-Q100	74HC4538PW-Q100,11	74HC4538PW-Q100		Always Pb-free	40.0	1.4	7.46E8	1	1

Quality and reliability disclaimer

Documentation (9)

File name	Title	Type	Date
74HC4538_Q100	Dual retriggerable precision monostable multivibrator	Data sheet	2021-07-16
AN11044	Pin FMEA 74HC/74HCT family	Application note	2019-01-09
Nexperia_Selection_guide_2022	Nexperia Selection Guide 2022	Selection guide	2022-01-05
hc	HC/HCT Spice model	SPICE model	2022-02-17
HCT_USER_GUIDE	HC/T User Guide	User manual	1997-10-31
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08

Support

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Models

File name	Title	Type	Date
hc	HC/HCT Spice model	SPICE model	2022-02-17

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