NXP Semiconductors HEF4538B
The HEF4538B is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has an active LOW trigger/retrigger input (nA), an active HIGH trigger/retrigger input (nB), an overriding active LOW direct reset input (nCD), an output (nQ) and its complement (nQ), and two pins (nREXT/CEXT, and nCEXT, always connected to ground) for connecting the external timing components CEXT and REXT. The multivibrator may be triggered by either the positive or the negative edges of the input pulse and will produce an accurate output pulse with a pulse width range of 10 s to infinity.| Part No. | HEF4538B |
|---|---|
| Datasheet | HEF4538B Download |
| Manufacturer |  NXP Semiconductors |
| Description | Dual precision monostable multivibrator |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● Tolerant of slow trigger rise and fall times● Fully static operation
● 5 V, 10 V, and 15 V parametric ratings
● Standardized symmetrical output characteristics
● Specified from 40 C to +85 C and 40 C to +125 C
● Complies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering information All types operate from 40 C to +125 C. Type number Package Name
DESCRIPTION
HEF4538BT SO16 plastic small outline package; 16 leads; body width 3.9 mm Version SOT109-1 NXP Semiconductors 4. Functional diagram HEF4538B Dual precision monostable multivibrator Fig 1. Functional diagram 5(;7 &(;7 &(;7 $ % &' 5(;7 &(;7 &(;7 $ % &' 4 4 4 4 DDH HEF4538B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 10 — 1 April 2016 © NXP Semiconductors N.V. 2016. All rights reserved. 2 of 17 NXP Semiconductors Q% Q$ 9'' Q5(;7 &(;7 Q&(;7 966 Q&' 9UHI HQDEOH 9UHI HQDEOH HEF4538B Dual precision monostable multivibrator Q4 Q4 Fig 2.
