74HC4538D-Q100_技术文档

74HC4538-Q100

Dual retriggerable precision monostable multivibrator

Rev. 3 — 17 March 2017

Product data sheet

1 General description

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_EXTand 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_EXTand 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.

2 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

• Tolerant of slow trigger rise and fall times

• Separate reset inputs

• Triggering from falling or rising edge

• Complies with JEDEC standard no. 7A

• CMOS input levels:

• ESD protection:

– MIL-STD-883, method 3015 exceeds 2000 V

– HBM JESD22-A114F exceeds 2000 V

– MM JESD22-A115-A exceeds 200 V

• Multiple package options

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

3 Ordering information

Table 1. Ordering information

Type number

Package

Temperature

range

Name

Description

Version

74HC4538D-Q100

-40 °C to +125 °C

SO16

plastic small outline package; 16 leads;

body width 3.9 mm

SOT109-1

SOT403-1

74HC4538PW-Q100 -40 °C to +125 °C

TSSOP16 plastic thin shrink small outline package; 16 leads;

body width 4.4 mm

4 Functional diagram

2

1

1REXT/CEXT

1CEXT

1Q

6

7

5

4

1A

1B

3

1CD

2REXT/CEXT

2CEXT

14

15

2Q 10

11 2A

12 2B

2Q

9

13 2CD

001aae727

Figure 1. Functional diagram

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

nB

nA

V

CC

nREXT/CEXT

nCEXT

enable

V

ref1

GND

nCD

power-on reset

V

ref2

enable

V

CC

nQ

mba338

GND

Figure 2. Logic diagram (one multivibrator)

74HC4538_Q100

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Dual retriggerable precision monostable multivibrator

5 Pinning information

5.1 Pinning

74HC4538-Q100

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

1CEXT

V

CC

74HC4538-Q100

1REXT/CEXT

2CEXT

1CD

1B

2REXT/CEXT

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1CEXT

V

CC

1REXT/CEXT

2CEXT

2CD

2B

1CD

1B

2REXT/CEXT

1A

2CD

2B

1A

1Q

2A

1Q

2A

1Q

2Q

1Q

2Q

GND

aaa-026544

aaa-026546

Figure 3. Pin configuration for SO16

Figure 4. Pin configuration for TSSOP16

5.2 Pin description

Table 2. Pin description

Symbol

Description

1CEXT, 2CEXT

1, 15

2, 14

3, 13

4, 12

5, 11

6, 10

7, 9

external capacitor connection (always connected to ground)

external capacitor/resistor connection

direct reset input (active LOW)

input (LOW to HIGH triggered)

input (HIGH to LOW triggered)

output

1REXT/CEXT, 2REXT/CEXT

1CD, 2CD

1B, 2B

1A, 2A

1Q, 2Q

GND

complementary output (active LOW)

ground (0 V)

8

V_CC

16

supply voltage

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

6 Functional description

Table 3. Function table ^[1]

Inputs

Outputs

nA

↓

nB

L

nCD

nQ

H

L

H

↑

X

L

H

[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care;

↑ = positive-going transition; ↓ = negative-going transition;

= one HIGH level output pulse, with the pule width determined by C_EXTand R_EXT

;

= one LOW level output pulse, with the pulse width determined by C_EXTand R_EXT

.

(1)

(2)

(1)

nB input

(3)

nA input

(4)

nCD input

nREXT/CEXT input

V

ref2

V

ref1

nQ output

T

(5)

T

001aae737

(1) Positive edge triggering.

(2) Positive edge re-triggering (pulse lengthening).

(3) Negative edge triggering.

(4) Reset (pulse shortening).

(5) T_W= 0.7 x R_EXTx C_EXT(see also Figure 6.

Figure 5. Timing diagram

C

EXT

R

EXT

V

GND

CC

nCEXT

nREXT/CEXT

nQ

T

nA

nB

nQ

T = 0.7 × R

× C

EXT

nCD

001aak192

Figure 6. Connection of the external timing components R_EXTand C_EXT

74HC4538_Q100

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

7 Limiting values

Table 4. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).

Symbol Parameter

Conditions

Min

Max

+7.0

±20

±25

+50

-

Unit

V

V_CC

I_IK

supply voltage

-0.5

[1]

input clamping current

output clamping current

output current

V_I< -0.5 V or V_I> V_CC+ 0.5 V

V_O< -0.5 V or V_O> V_CC+ 0.5 V

V_O= -0.5 V to V_CC+ 0.5 V

-

mA

°C

I_OK

I_O

-

I_CC

I_GND

T_stg

P_tot

supply current

-

ground current

-50

-65

storage temperature

total power dissipation

+150

T_amb= -40 °C to +125 °C

SO16 package

[2]

[3]

-

500

mW

TSSOP16 package

[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

[2] P_totderates linearly with 8 mW/K above 70 °C.

[3] P_totderates linearly with 5.5 mW/K above 60 °C.

8 Recommended operating conditions

Table 5. Recommended operating conditions

Voltages are referenced to GND (ground = 0 V)

Symbol Parameter

Conditions

Min

Typ

Max

6.0

Unit

V_CC

V_I

supply voltage

input voltage

2.0

5.0

V

0

-

V_CC

+125

625

139

83

V

V_O

output voltage

ambient temperature

-

V

T_amb

Δt/ΔV

-40

-

°C

input transition rise and fall rate V_CC= 2.0 V

-

1.67

-

ns/V

V_CC= 4.5 V

V_CC= 6.0 V

-

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9 Static characteristics

Table 6. Static characteristics

At recommended operating conditions; voltages are referenced to GND (ground = 0 V).

Symbol Parameter Conditions

25 °C

-40 °C to +85 °C -40 °C to +125 °C Unit

Min Typ Max Min

Max

Min

1.5

3.15

4.2

-

Max

V_IH

HIGH-level

V_CC= 2.0 V

V_CC= 4.5 V

V_CC= 6.0 V

V_CC= 2.0 V

V_CC= 4.5 V

V_CC= 6.0 V

V_I= V_IHor V_IL

1.5 1.2

3.15 2.4

4.2 3.2

-

1.5

-

V

input voltage

3.15

4.2

-

V_IL

LOW-level

-

0.8 0.5

2.1 1.35

2.8 1.8

-

0.5

1.35

1.8

0.5

1.35

1.8

input voltage

-

V_OH

HIGH-level

output voltage

I_O= -20 μA; V_CC= 2.0 V

1.9 2.0

4.4 4.5

5.9 6.0

-

1.9

4.4

-

1.9

4.4

5.9

3.7

5.2

-

V

I_O= -20 μA; V_CC= 4.5 V

I_O= -20 μA; V_CC= 6.0 V

5.9

I_O= -4.0 mA; V_CC= 4.5 V 3.98 4.32

I_O= -5.2 mA; V_CC= 6.0 V 5.48 5.81

3.84

5.34

V_OL

LOW-level

V_I= V_IHor V_IL

output voltage

I_O= 20 μA; V_CC= 2.0 V

-

0

0.1

-

0.1

-

0.1

0.4

±1

V

I_O= 20 μA; V_CC= 4.5 V

I_O= 20 μA; V_CC= 6.0 V

I_O= 4.0 mA; V_CC= 4.5 V

I_O= 5.2 mA; V_CC= 6.0 V

V

0.1

V

0.15 0.26

0.16 0.26

0.33

±1

V

I_I

input leakage V_I= V_CCor GND;

-

±0.1

μA

current

V_CC= 6.0 V

pin nREXT/CEXT;

V_I= 2.0 V or GND;

other inputs at V_CCor GND;

V_CC= 6.0 V ^[1]

-

±50

-

±500

-

±500

nA

I_CC

supply current V_I= V_CCor GND; I_O= 0 A;

V_CC= 6.0 V

-

8.0

-

80

-

160

-

μA

pF

C_I

input

3.5

capacitance

[1] This measurement can only be carried out after a trigger pulse is applied.

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

10 Dynamic characteristics

Table 7. Dynamic characteristics

Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9.

Symbol Parameter Conditions

25 °C

-40 °C to

+85 °C

-40 °C to

+125 °C

Unit

Min Typ^[1]Max Min

Max

Min

Max

t_PLH

LOW to HIGH nA, nB to nQ; see Figure 7

propagation

delay

V_CC= 2.0 V

V_CC= 4.5 V

-

85

31

27

25

265

53

-

330

66

-

400

80

-

ns

V_CC= 5.0 V; C_L= 15 pF

V_CC= 6.0 V

45

56

68

nCD to nQ; see Figure 7

V_CC= 2.0 V

-

83

30

24

265

53

-

340

68

-

400

80

ns

V_CC= 4.5 V

V_CC= 6.0 V

45

58

68

t_PHL

HIGH to LOW nA, nB to nQ; see Figure 7

propagation

V_CC= 2.0 V

-

83

30

27

24

265

53

-

330

66

-

400

80

-

ns

delay

V_CC= 4.5 V

V_CC= 5.0 V; C_L= 15 pF

V_CC= 6.0 V

45

56

68

nCD to nQ; see Figure 7

V_CC= 2.0 V

-

80

29

23

265

53

-

330

66

-

400

80

ns

V_CC= 4.5 V

V_CC= 6.0 V

45

56

68

[2]

t_t

transition time nQ and nQ; see Figure 7

V_CC= 2.0 V

-

19

7

75

15

13

-

95

19

16

-

119

22

ns

V_CC= 4.5 V

V_CC= 6.0 V

6

19

t_W

pulse width

nA LOW; see Figure 8

V_CC= 2.0 V

80

16

14

17

6

-

100

20

-

120

24

-

ns

V_CC= 4.5 V

V_CC= 6.0 V

5

17

20

nB HIGH; see Figure 8

V_CC= 2.0 V

80

16

14

17

6

-

100

20

-

120

24

-

ns

V_CC= 4.5 V

V_CC= 6.0 V

5

17

20

nCD LOW; see Figure 8

V_CC= 2.0 V

80

19

-

100

-

120

-

ns

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

Symbol Parameter Conditions

25 °C

-40 °C to

+85 °C

-40 °C to

+125 °C

Unit

Min Typ^[1]Max Min

Max

Min

Max

V_CC= 4.5 V

V_CC= 6.0 V

16

14

7

6

-

20

17

-

24

20

-

ns

nQ and nQ HIGH or LOW;

see Figure 8

V_CC= 5.0 V;

630

700

770

602

798

595

805

μs

C_EXT= 0.1 μF;

R_EXT= 10 kΩ

t_rec

recovery time nCD to nA, nB;

see Figure 8

V_CC= 2.0 V

V_CC= 4.5 V

V_CC= 6.0 V

35

7

6

2

-

45

9

-

55

11

9

-

ns

6

8

t_rtrig

retrigger time nA, nB; see Figure 8;

X = C_EXT/ (4.5 × V_CC

)

V_CC= 2.0 V

V_CC= 4.5 V

V_CC= 6.0 V

-

455+X

-

ns

kΩ

80+X

-

55+X

-

R_EXT

C_EXT

C_PD

external

timing

V_CC= 2.0 V

V_CC= 5.0 V

10

2

-

1000

resistor

external

timing

no limits

capacitor

[3]

power

per multivibrator;

V_I= GND to V_CC

-

136

-

pF

dissipation

capacitance

[1] Typical values are measured at nominal supply voltage (V_CC= 3.3 V and V_CC= 5.0 V).

[2] t_tis the same as t_THLand t_TLH

.

[3] C_PDis used to determine the dynamic power dissipation (P_Din μW).

P_D= C_PD× V_CC²× f_i+ Σ(C_L× V_CC²× f_o) + 0.48 × C_EXT× V_CC²× f_o+ D × 0.8 × V_CCwhere:

f_i= input frequency in MHz;

f_o= output frequency in MHz;

Σ(C_L× V_CC²× f_o) = sum of the outputs;

C_L= output load capacitance in pF;

V_CC= supply voltage in V;

D = duty cycle factor in %;

C_EXT= external timing capacitance in pF.

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

10.1 Waveforms and test circuit

V

I

nB input

GND

V

M

t

W

V

I

nA input

GND

V

M

t

W

V

I

nCD input

GND

V

M

t

PHL

PLH

PHL

V

OH

V

Y

nQ output

V

M

V

X

V

OL

t

PLH

PHL

THL

TLH

V

OH

V

Y

nQ output

V

M

V

X

V

OL

001aak194

Measurement points are given in Table 8.

Logic levels: V_OLand V_OHare typical output levels that occur with the output load.

Figure 7. Waveforms showing propagation delays and transition times

V

I

nCD input

GND

V

M

t

W

rec

V

I

nA input

GND

V

M

t

W

V

I

nB input

GND

V

M

t

rtrig

V

OH

nQ, nQ output

V

M

V

OL

t

W

001aak195

Measurement points are given in Table 8.

Logic levels: V_OLand V_OHare typical output levels that occur with the output load.

Figure 8. Waveforms showing nA, nB, nQ, nQ pulse widths, recovery and retrigger times

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

Table 8. Measurement points

Input

Output

V_M

V_X

V_Y

0.5V_CC

0.1V_CC

0.9V_CC

t

W

V

I

90 %

negative

pulse

V

M

10 %

0 V

t

r

f

t

f

r

V

I

90 %

positive

pulse

V

M

10 %

0 V

t

W

V

CC

V

I

V

O

R

L

S1

G

open

DUT

R

T

C

L

001aad983

Test data is given in Table 9 .

Definitions test circuit:

R_T= Termination resistance should be equal to output impedance Z_oof the pulse generator.

C_L= Load capacitance including jig and probe capacitance.

R_L= Load resistance.

S1 = Test selection switch

Figure 9. Test circuit for measuring switching times

Table 9. Test data

Input

V_I

Load

S1 position

t_r, t_f

C_L

R_L

t_PHL, t_PLH

V_CC

6 ns

15 pF, 50 pF

1 kΩ

open

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

11 Application information

11.1 Power-down considerations

A large capacitor (C_EXT) may cause problems when powering-down the monostable due

to energy stored in this capacitor. When a system containing this device is powered-

down or rapid decrease of V_CCto zero occurs, the monostable may sustain damage, due

to the capacitor discharging through the input protection diodes. To avoid this possibility,

use a damping diode (D_EXT) preferably a germanium or Schottky type diode able to

withstand large current surges and connect as shown in Figure 10

D

R

EXT

C

EXT

V

GND

CC

nCEXT

nREXT/CEXT

001aak193

Figure 10. Power-down protection circuit

11.2 Graphs

001aak196

1.6

1.12

1 kΩ

2 kΩ

normalized

K factor

(K)

R

C

(t

×

EXT

5.6 kΩ

51 kΩ

1 MΩ

EXT

)

W

1.2

1.0

0.8

0.6

0.84

0.70

0.56

0.42

- 10

- 9

- 8

- 7

- 6

- 5

- 4

10

C

EXT

(F)

V_CC= 4.5 V; T_amb= 25 °C.

Figure 11. Typical pulse width accuracy versus external capacitance

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

001aak197

1.6

1.12

normalized

K factor

(K)

R

C

EXT

(t

×

EXT

)

W

1.2

1.0

0.8

0.6

0.84

0.70

0.56

0.42

1 nF

> 100 nF

3

4

5

6

10

R

EXT

(Ω)

V_CC= 4.5 V; T_amb= 25 °C.

Figure 12. Typical pulse width accuracy versus external resistance

001aak198

1.6

1.12

normalized

K factor

(K)

R

C

(t

×

EXT

)

W

1.2

1.0

0.8

0.6

0.84

0.70

0.56

0.42

+10 %

R

EXT

- 10 %

- 10

- 9

- 8

- 7

- 6

- 5

- 4

10

C

EXT

(F)

V_CC= 4.5 V; R_EXT= 10 kΩ; T_amb= 25 °C.

Figure 13. Typical pulse width accuracy versus external capacitance

001aak199

1.7

1.19

2 kΩ

1 kΩ

normalized

K factor

(K)

R

C

(t

×

EXT

)

W

5.6 kΩ

1.3

1.1

0.9

0.7

0.91

0.77

0.63

0.49

10 kΩ

1 MΩ

1

2

3

4

5

6

V

(V)

CC

C_EXT= 1 nF; T_amb= 25 °C.

Figure 14. Typical pulse width accuracy versus power supply

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

001aak200

1.7

1.19

normalized

K factor

(K)

R

C

(t

×

EXT

)

W

1 kΩ

2 kΩ

1.3

1.1

0.9

0.7

0.91

0.77

0.63

0.49

5.6 kΩ

1 MΩ

1

2

3

4

5

6

V

(V)

CC

C_EXT= 100 nF; T_amb= 25 °C.

Figure 15. Typical pulse width accuracy versus power supply

001aak201

1.7

1.19

1 kΩ

normalized

K factor

(K)

R

C

(t

×

EXT

)

W

2 kΩ

1.3

1.1

0.9

0.7

0.91

5.6 kΩ

1 MΩ 0.77

0.63

0.49

150

- 50

0

50

100

T

(°C)

amb

V_CC= 4.5 V; C_EXT= 1 nF; T_amb= 25 °C.

Figure 16. Typical pulse width accuracy versus temperature

001aak202

1.7

1.19

normalized

K factor

(K)

R

C

(t

×

EXT

)

W

1.3

1.1

0.9

0.7

0.91

0.77

0.63

0.49

1 kΩ

2 kΩ

5.6 kΩ

1 MΩ

- 50

0

50

100

150

T

(°C)

amb

V_CC= 4.5 V; C_EXT= 1 μF; T_amb= 25 °C.

Figure 17. Typical pulse width accuracy versus temperature

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74HC4538-Q100

Dual retriggerable precision monostable multivibrator

12 Package outline

SO16: plastic small outline package; 16 leads; body width 3.9 mm

SOT109-1

D

E

A

X

v

c

y

H

M

A

E

Z

16

9

Q

A

2

A

(A )

3

A

1

pin 1 index

θ

L

p

L

1

8

e

w

M

detail X

b

p

0

2.5

scale

5 mm

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

A

(1)

UNIT

A

b

c

D

E

e

H

E

L

p

Q

v

w

y

Z

θ

1

2

3

p

max.

0.25

0.10

1.45

1.25

0.49

0.36

0.25

0.19

10.0

9.8

4.0

3.8

6.2

5.8

1.0

0.4

0.7

0.6

0.7

0.3

mm

1.27

0.05

1.05

0.041

1.75

0.25

0.01

0.25

0.1

0.25

0.01

8^o

0^o

0.0100

0.0075

0.010 0.057

0.004 0.049

0.019

0.014

0.39

0.38

0.16

0.15

0.244

0.228

0.039 0.028

0.016 0.020

0.028

0.012

inches

0.069

0.01 0.004

Note

1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.

REFERENCES

OUTLINE

EUROPEAN

PROJECTION

ISSUE DATE

VERSION

IEC

JEDEC

JEITA

99-12-27

03-02-19

SOT109-1

076E07

MS-012

Figure 18. Package outline SOT109-1 (SO16)

74HC4538_Q100

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3 — 17 March 2017

15 / 20

Nexperia

74HC4538-Q100

Dual retriggerable precision monostable multivibrator

TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm

SOT403-1

D

E

A

X

c

y

H

v

M

A

E

Z

9

16

Q

(A )

3

A

2

A

1

pin 1 index

θ

L

p

L

1

8

detail X

w

M

b

p

e

0

2.5

5 mm

scale

DIMENSIONS (mm are the original dimensions)

A

(1)

(2)

(1)

UNIT

A

b

c

D

E

e

H

L

Q

v

w

y

Z

θ

1

2

3

p

E

p

max.

8^o

0^o

0.15

0.05

0.95

0.80

0.30

0.19

0.2

0.1

5.1

4.9

4.5

4.3

6.6

6.2

0.75

0.50

0.4

0.3

0.40

0.06

mm

1.1

0.65

1

0.2

0.13

0.1

0.25

Notes

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.

REFERENCES

OUTLINE

EUROPEAN

PROJECTION

ISSUE DATE

VERSION

IEC

JEDEC

JEITA

99-12-27

03-02-18

SOT403-1

MO-153

Figure 19. Package outline SOT403-1 (TSSOP16)

74HC4538_Q100

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3 — 17 March 2017

16 / 20

Nexperia

74HC4538-Q100

Dual retriggerable precision monostable multivibrator

13 Abbreviations

Table 10. Abbreviations

Acronym

CMOS

DUT

Description

Complementary Metal-Oxide Semiconductor

Device Under Test

ElectroStatic Discharge

Human Body Model

Machine Model

ESD

HBM

MM

MIL

Military

14 Revision history

Table 11. Revision history

Document ID

Release date Data sheet status

Change

notice

Supersedes

74HC4538-Q100 v.3

Modifications:

20170317

Product data sheet

-

74HC_HCT4538-Q100 v.2

• Type numbers 74HCT4538D-Q100 and 74HCT4538PW-Q100 removed.

• Table 6: Maximum input leakage current for pins 1REXT/CEXT and 2REXT/CEXT

changed.

74HC_HCT4538-Q100 v.2 20151223

Product data sheet

-

74HC_HCT4538-Q100 v.1

Modifications: • C_PDformula corrected (errata).

74HC_HCT4538-Q100 v.1 20120802

Product data sheet

-

74HC4538_Q100

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3 — 17 March 2017

17 / 20

Nexperia

74HC4538-Q100

Dual retriggerable precision monostable multivibrator

15 Legal information

15.1 Data sheet status

Document status^[1][2]

Product status^[3]

Definition

Objective [short] data sheet

Development

This document contains data from the objective specification for product

development.

Preliminary [short] data sheet

Product [short] data sheet

Qualification

Production

This document contains data from the preliminary specification.

This document contains the product specification.

[1] Please consult the most recently issued document before initiating or completing a design.

[2] The term 'short data sheet' is explained in section "Definitions".

[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple

devices. The latest product status information is available on the Internet at URL http://www.nexperia.com.

or warranty that such applications will be suitable for the specified use

without further testing or modification. Customers are responsible for the

15.2 Definitions

design and operation of their applications and products using Nexperia

products, and Nexperia accepts no liability for any assistance with

Draft — The document is a draft version only. The content is still under

applications or customer product design. It is customer’s sole responsibility

internal review and subject to formal approval, which may result in

modifications or additions. Nexperia does not give any representations or

customer’s applications and products planned, as well as for the planned

warranties as to the accuracy or completeness of information included herein

application and use of customer’s third party customer(s). Customers should

and shall have no liability for the consequences of use of such information.

provide appropriate design and operating safeguards to minimize the risks

to determine whether the Nexperia product is suitable and fit for the

associated with their applications and products. Nexperia does not accept

Short data sheet — A short data sheet is an extract from a full data sheet

any liability related to any default, damage, costs or problem which is based

with the same product type number(s) and title. A short data sheet is

on any weakness or default in the customer’s applications or products, or

intended for quick reference only and should not be relied upon to contain

the application or use by customer’s third party customer(s). Customer is

detailed and full information. For detailed and full information see the

responsible for doing all necessary testing for the customer’s applications

relevant full data sheet, which is available on request via the local Nexperia

and products using Nexperia products in order to avoid a default of the

sales office. In case of any inconsistency or conflict with the short data sheet,

applications and the products or of the application or use by customer’s third

the full data sheet shall prevail.

party customer(s). Nexperia does not accept any liability in this respect.

Product specification — The information and data provided in a Product

Limiting values — Stress above one or more limiting values (as defined in

data sheet shall define the specification of the product as agreed between

the Absolute Maximum Ratings System of IEC 60134) will cause permanent

Nexperia and its customer, unless Nexperia and customer have explicitly

damage to the device. Limiting values are stress ratings only and (proper)

agreed otherwise in writing. In no event however, shall an agreement be

operation of the device at these or any other conditions above those

valid in which the Nexperia product is deemed to offer functions and qualities

beyond those described in the Product data sheet.

given in the Recommended operating conditions section (if present) or the

Characteristics sections of this document is not warranted. Constant or

repeated exposure to limiting values will permanently and irreversibly affect

the quality and reliability of the device.

15.3 Disclaimers

Terms and conditions of commercial sale — Nexperia products are

sold subject to the general terms and conditions of commercial sale, as

Limited warranty and liability — Information in this document is believed

published at http://www.nexperia.com/profile/terms, unless otherwise agreed

to be accurate and reliable. However, Nexperia does not give any

in a valid written individual agreement. In case an individual agreement is

representations or warranties, expressed or implied, as to the accuracy

concluded only the terms and conditions of the respective agreement shall

or completeness of such information and shall have no liability for the

apply. Nexperia hereby expressly objects to applying the customer’s general

consequences of use of such information. Nexperia takes no responsibility

terms and conditions with regard to the purchase of Nexperia products by

for the content in this document if provided by an information source outside

customer.

of Nexperia. In no event shall Nexperia be liable for any indirect, incidental,

punitive, special or consequential damages (including - without limitation -

lost profits, lost savings, business interruption, costs related to the removal

No offer to sell or license — Nothing in this document may be interpreted

or construed as an offer to sell products that is open for acceptance or

or replacement of any products or rework charges) whether or not such

the grant, conveyance or implication of any license under any copyrights,

damages are based on tort (including negligence), warranty, breach of

patents or other industrial or intellectual property rights.

contract or any other legal theory. Notwithstanding any damages that

customer might incur for any reason whatsoever, Nexperia's aggregate and

Suitability for use in automotive applications — This Nexperia product

cumulative liability towards customer for the products described herein shall

has been qualified for use in automotive applications. Unless otherwise

be limited in accordance with the Terms and conditions of commercial sale of

agreed in writing, the product is not designed, authorized or warranted to

Nexperia.

be suitable for use in life support, life-critical or safety-critical systems or

equipment, nor in applications where failure or malfunction of an Nexperia

product can reasonably be expected to result in personal injury, death or

Right to make changes — Nexperia reserves the right to make changes

to information published in this document, including without limitation

severe property or environmental damage. Nexperia and its suppliers accept

specifications and product descriptions, at any time and without notice. This

no liability for inclusion and/or use of Nexperia products in such equipment or

document supersedes and replaces all information supplied prior to the

applications and therefore such inclusion and/or use is at the customer's own

publication hereof.

risk.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. Nexperia makes no representation

74HC4538_Q100

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3 — 17 March 2017

18 / 20

Nexperia

74HC4538-Q100

Dual retriggerable precision monostable multivibrator

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from competent authorities.

15.4 Trademarks

Notice: All referenced brands, product names, service names and

trademarks are the property of their respective owners.

Translations — A non-English (translated) version of a document is for

reference only. The English version shall prevail in case of any discrepancy

between the translated and English versions.

74HC4538_Q100

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Product data sheet

Rev. 3 — 17 March 2017

19 / 20

Nexperia

74HC4538-Q100

Dual retriggerable precision monostable multivibrator

Contents

1

General description ............................................ 1

2

3

4

5

5.1

5.2

6

7

8

Features and benefits .........................................1

Ordering information .......................................... 2

Functional diagram .............................................2

Pinning information ............................................ 4

Pinning ...............................................................4

Pin description ...................................................4

Functional description ........................................5

Limiting values ....................................................6

Recommended operating conditions ................6

Static characteristics ..........................................7

Dynamic characteristics .....................................8

Waveforms and test circuit .............................. 10

Application information ....................................12

Power-down considerations .............................12

Graphs ............................................................. 12

Package outline .................................................15

Abbreviations .................................................... 17

Revision history ................................................ 17

Legal information ..............................................18

9

10

10.1

11

11.1

11.2

12

13

14

15

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section 'Legal information'.

For more information, please visit: http://www.nexperia.com

For sales office addresses, please send an email to: salesaddresses@nexperia.com

Date of release: 17 March 2017

Document identifier: 74HC4538_Q100


型号：	74HC4538D-Q100
厂家：	Nexperia
描述：	Dual retriggerable precision monostable multivibrator 时钟光电二极管逻辑集成电路
文件：	总20页 (文件大小：256K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

74HC4538D-Q100 [NEXPERIA]

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