HEF4538B-Q100(2018) View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
HEF4538B-Q100 Datasheet PDF : 14 Pages
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Nexperia
5. Pinning information
HEF4538B-Q100
Dual precision monostable multivibrator
5.1. Pinning
HEF4538B
1CEXT 1
1REXT/CEXT 2
1CD 3
1B 4
1A 5
1Q 6
1Q 7
VSS 8
Fig. 3. Pin configuration SOT109-1 (SO16)
16 VDD
15 2CEXT
14 2REXT/CEXT
13 2CD
12 2B
11 2A
10 2Q
9 2Q
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5.2. Pin description
Table 2. Pin description
Symbol
1CEXT, 2CEXT
1REXT/CEXT, 2REXT/CEXT
1CD, 2CD
1B, 2B
1A, 2A
1Q, 2Q
1Q, 2Q
VSS
VDD
Pin
1, 15
2, 14
3, 13
4, 12
5, 11
6, 10
7, 9
8
16
Description
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
complementary output (active LOW)
ground supply voltage
supply voltage
6. Functional description
Table 3. Function table
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 pulse width determined by CEXT and REXT;
= one LOW level output pulse, with the pulse width determined by CEXT and REXT.
Inputs
Outputs
nA
nB
nCD
nQ
nQ
↓
L
H
H
↑
H
X
X
L
L
H
HEF4538B_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 19 October 2018
© Nexperia B.V. 2018. All rights reserved
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