| Parameters |
| Mount |
Through Hole |
| Mounting Type |
Through Hole |
| Package / Case |
20-DIP (0.300, 7.62mm) |
| Number of Pins |
20 |
| Operating Temperature |
-55°C~125°C |
| Packaging |
Tube |
| Series |
74HC |
| JESD-609 Code |
e3 |
| Pbfree Code |
yes |
| Part Status |
Obsolete |
| Moisture Sensitivity Level (MSL) |
1 (Unlimited) |
| Number of Terminations |
20 |
| Type |
Identity Comparator |
| Terminal Finish |
Matte Tin (Sn) |
| Additional Feature |
CASCADABLE |
| Subcategory |
Arithmetic Circuits |
| Technology |
CMOS |
| Voltage - Supply |
2V~6V |
| Terminal Position |
DUAL |
| Number of Functions |
1 |
| Supply Voltage |
4.5V |
| Terminal Pitch |
2.54mm |
| Base Part Number |
M74HC68 |
| Output |
Active Low |
| Pin Count |
20 |
| Polarity |
Inverting |
| Supply Voltage-Max (Vsup) |
6V |
| Power Supplies |
2/6V |
| Supply Voltage-Min (Vsup) |
2V |
| Number of Circuits |
1 |
| Load Capacitance |
50pF |
| Number of Bits |
8 |
| Propagation Delay |
255 ns |
| Quiescent Current |
4μA |
| Turn On Delay Time |
29 ns |
| Family |
HC/UH |
| Current - Output High, Low |
5.2mA 5.2mA |
| Max Propagation Delay @ V, Max CL |
29ns @ 6V, 50pF |
| Output Function |
A=B |
| Height Seated (Max) |
3.93mm |
| Length |
25.4mm |
| Width |
7.62mm |
| Radiation Hardening |
No |
| RoHS Status |
ROHS3 Compliant |
| Lead Free |
Lead Free |
M74HC688B1R Overview
Using materials from Tube, the packaging is made.Because of its low package cost, the 20-DIP (0.300, 7.62mm) is well known in the electronic industry.An electronic part designed with 8 Bits is used in this product.The 74HC Series offers an excellent price-performance ratio.Through Hole is used to mount this electronic part.An electrical device of this type produces Active Low as an output.This device is equipped with a 2V~6V Supply Voltage so it can operate normally.Reliability is ensured by using the Operating Temperature of -55°C~125°C.For standard grade applications, the Identity Comparator Type is suitable.As the output current of 5.2mA 5.2mA is high/low, it has maximum design flexibility.The 20 command is used to program terminations.1 functions are available on it.Comparator can be established which parts are related to a Base Part Number.Comparator is powered from a Supply Voltage of 4.5V.The 20 Pin Count feature is included.There are 20 pins, which are pronged contacts as part of a signal interface in a computer or other communications device. There is a mounting direction of Through Hole on this electronic part.Electronic devices belonging to the HC/UH family make up this device.Subcategory Arithmetic Circuits contains it.In order to run it, it needs a 2/6V power supply.At 6V, the supply voltage reaches its maximum value (Vsup).There should be a difference between Vsup and 2V in the supply voltage.In addition to CASCADABLE, for example, other additions have been made.Despite external factors, it consumes 4μA of quiescent current.
M74HC688B1R Features
20-DIP (0.300, 7.62mm) package
8 Bits
74HC series
20 terminations
1 Functions
20 pin count
2/6V power supplies
M74HC688B1R Applications
There are a lot of STMicroelectronics M74HC688B1R applications of comparators.
- “Time out" timer for consume-appication industrial controls
- Process contollenr
- Servo Motor Controls
- Servo motor controls
- Fixed or programmable irequency division
- Companion Appliceation Nole, ICAN-6374, "Application of the CMOS CD4059A Programmable Divide-by-N Counter in FM and Ctizens Band Transceiver Digital Tuners"
- Communications digltal frequency synthesizers: VHF, UHF, FM, AM, etc.