| Sign In | Join Free | My entremaqueros.com | 
 | 
| Categories | MCU Microcontroller Unit | 
|---|---|
| Model Number: | ccc | 
| Certification: | new & original | 
| Place of Origin: | original factory | 
| MOQ: | 10pcs | 
| Price: | Negotiate | 
| Payment Terms: | T/T, Western Union, Paypal | 
| Supply Ability: | 8300pcs | 
| Delivery Time: | 1 day | 
| Packaging Details: | Please contact me for details | 
| Description: | Monostable Multivibrator 40 ns 16-DIP | 
| VDD: | 5 V | 
| Supply current: | 55 µA | 
| Change in output O: | ± 0,2 % | 
| External timing resistor: | 5 kΩ (MIN) | 
| External timing capacitor: | 2000 pF (MIN) | 
| Input capacitance (pin 2 or 14): | 15 pF | 
Dual precision monostable multivibrator HEF4538B MSI
DESCRIPTION
The HEF4538B is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has an active LOW trigger/retrigger input (I0), an active HIGH trigger/retrigger input (I1), an overriding active LOW direct reset input (CD), an output (O) and its complement (O), and two pins (CTC, (1) RCTC) for connecting the external timing components Ct and Rt. Typical pulse width variation over temperature range is ± 0,2%.
The HEF4538B 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 µs to infinity. The duration and accuracy of the output pulse are determined by the external timing components Ct and Rt. The output pulse width (T) is equal to Rt × Ct. The linear design techniques in LOCMOS guarantee precise control of the output pulse width.
A LOW level at CD terminates the output pulse immediately. Schmitt-trigger action in the trigger inputs makes the circuit highly tolerant to slower rise and fall times.
HEF4538BP(N): 16-lead DIL; plastic (SOT38-1)
HEF4538BD(F): 16-lead DIL; ceramic (cerdip) (SOT74)
HEF4538BT(D): 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
Fig.1 Functional diagram.
Fig.2 Pinning diagram.
PINNING
I0A, I0B input (HIGH to LOW triggered)
I1A, I1B input (LOW to HIGH triggered)
CDA, CDB direct reset input (active LOW)
OA, OB output
OA, OB complementary output (active LOW)
CTC A, CTC B external capacitor connections(1)
RCTC A, RCTC B external capacitor/ resistor connections
Note 1. Always connected to ground.
Fig.3 Logic diagram.
Stock Offer (Hot Sell)
| Part NO. | Q'ty | MFG | D/C | Package | 
| TLC072AIDR | 8819 | TI | 15+ | SOP-8 | 
| TS4140 | 10000 | 15+ | SOT-223 | |
| UC3845DTR | 8279 | TI | 15+ | SOP-14 | 
| TPS3808G50DBVR | 5281 | TI | 16+ | SOT23-6 | 
| TS391ILT | 5879 | ST | 15+ | SOT23-5 | 
| TVP5147PFPR | 3129 | TI | 14+ | QFP-80 | 
| TL084BIPT | 5281 | ST | 15+ | TSSOP-14 | 
| TC6320TG-G | 3618 | SUPERTEX | 15+ | SOP-8 | 
| W2465S-70LL | 7982 | WINBOND | 15+ | SOP-28 | 
| TLC27L4IN | 5181 | TI | 15+ | DIP-14 | 
| VIPER26LD | 5389 | ST | 15+ | SOIC-16 | 
| TPS7301QDR | 6528 | TI | 16+ | SOP-8 | 
| TLC072CDR | 9719 | TI | 15+ | SOP-8 | 
| TL712CP | 5928 | TI | 14+ | SOP-8 | 
| TOP227YN | 4938 | POWER | 15+ | TO-220 | 
| TDA7360 | 6781 | ST | 15+ | ZIP-11 | 
| TDA7360 | 4192 | ST | 13+ | ZIP-11 | 
| UDQ2916EB | 4879 | ALLEGRO | 15+ | PLCC44 | 
| TEF6606T | 4200 | 15+ | SOP-32 | |
| TDA7293V | 4500 | ST | 16+ | ZIP-16 | 
| TS2431AILT | 30000 | ST | 15+ | SOT-23 | 
|   | 
 P87C51RC+4A Integrated Circuit Chip 8-bit CMOS (low voltage, low power, high speed) microcontroller families
                                                                                    
                        
                        
                        
                                                            P87C51RC+4A Integrated Circuit Chip 8-bit CMOS (low voltage, low power, high speed) microcontroller families
                                                    
                        
                     LPC1768FBD100 Programmable IC Chip 32-bit ARM Cortex-M3 microcontroller; up to 512 kB flash
                                                                                    
                        
                        
                        
                                                            LPC1768FBD100 Programmable IC Chip 32-bit ARM Cortex-M3 microcontroller; up to 512 kB flash
                                                    
                        
                     ATMEGA128-16AU NEW AND ORIGINAL STOCK
                                                                                    
                        
                        
                        
                                                            ATMEGA128-16AU NEW AND ORIGINAL STOCK
                                                    
                        
                     P80C557E4EFB microchips and integrated circuits Integrated Circuit Chip Single-chip 8-bit microcontroller
                                                                                    
                        
                        
                        
                                                            P80C557E4EFB microchips and integrated circuits Integrated Circuit Chip Single-chip 8-bit microcontroller
                                                    
                        
                     MC9S08AC128CFUE MC9S08AC128 Integrated Circuit Chip 8 Bit Microcontroller Data Sheet power ic chip
                                                                                    
                        
                        
                        
                                                            MC9S08AC128CFUE MC9S08AC128 Integrated Circuit Chip 8 Bit Microcontroller Data Sheet power ic chip
                                                    
                        
                     AT91SAM7X512B-AU NEW AND ORIGINAL STOCK
                                                                                    
                        
                        
                        
                                                            AT91SAM7X512B-AU NEW AND ORIGINAL STOCK
                                                    
                        
                     MAX3490CSA Programmable IC Chips 3.3V-Powered 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers
                                                                                    
                        
                        
                        
                                                            MAX3490CSA Programmable IC Chips 3.3V-Powered 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers
                                                    
                        
                     AT91SAM7S256D-MU NEW AND ORIGINAL STOCK
                                                                                    
                        
                        
                        
                                                            AT91SAM7S256D-MU NEW AND ORIGINAL STOCK
                                                    
                        
                     COP8SCR9HVA8 Integrated Circuit Chip 8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
                                                                                    
                        
                        
                        
                                                            COP8SCR9HVA8 Integrated Circuit Chip 8-Bit CMOS Flash Based Microcontroller with 32k Memory, Virtual EEPROM and Brownout
                                                    
                        
                     ATMEGA2561-16AU NEW AND ORIGINAL STOCK
                                                                                    
                        
                        
                        
                                                            ATMEGA2561-16AU NEW AND ORIGINAL STOCK