規格
| 屬性 | 價值 |
| Supplier | onsemi |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | 4000B |
| Part Status | Active |
| Logic Type | Monostable |
| Independent Circuits | 2 |
| Schmitt Trigger Input | Yes |
| Propagation Delay | 95 ns |
| Current - Output High Low | 8.8mA, 8.8mA |
| Voltage - Supply | 3 V ~ 18 V |
| Operating Temperature | -55°C ~ 125°C |
| Mounting Type | Surface Mount |
概述
Description
MC14538BDTR2G is a Motorola/NXP 4‑bit binary up/down counter in the MC14538 family. It counts in binary in response to a clock input, with the counting direction selected by the Up and Down inputs. The current count appears on the four outputs (QA–QD). The device includes an asynchronous clear (reset) to zero. It is implemented in CMOS, offering low power and a relatively wide operating voltage range, typically used with a single supply.
Key points:
- Clock input toggles the count; Up/Dn inputs set direction.
- 4 outputs provide the 4‑bit count.
- Asynchronous clear to reset to zero.
- Suitable for frequency division, timing/sequencing, counters in digital circuits.
- Package: 14‑pin small outline/tape-and-reel variant (BDTR2G code indicates packaging).
For exact pin configuration, timing, and voltage specs, refer to the MC14538BDTR2G datasheet.
Key points:
- Clock input toggles the count; Up/Dn inputs set direction.
- 4 outputs provide the 4‑bit count.
- Asynchronous clear to reset to zero.
- Suitable for frequency division, timing/sequencing, counters in digital circuits.
- Package: 14‑pin small outline/tape-and-reel variant (BDTR2G code indicates packaging).
For exact pin configuration, timing, and voltage specs, refer to the MC14538BDTR2G datasheet.
Equivalent
Equivalent parts (4-to-16 decoder/demultiplexer) from other makers include:
- 74HC154, 74HCT154, 74LS154
- SN74LS154, SN74HC154
- 74ALS154, 74ACT154
- Modern variants: 74LVC154, 74AHC154, 74AHCT154
Note: check enable polarity, output levels, and pinouts to ensure compatibility with your design.
- 74HC154, 74HCT154, 74LS154
- SN74LS154, SN74HC154
- 74ALS154, 74ACT154
- Modern variants: 74LVC154, 74AHC154, 74AHCT154
Note: check enable polarity, output levels, and pinouts to ensure compatibility with your design.
Features
Here are the key features of MC14538BDTR2G:
- 8-stage binary up/down counter
- Direction control via Up and Down inputs (cascadable)
- Asynchronous clear (reset to zero)
- Ripple Carry Out (RCO) for cascading to additional stages
- Wide supply voltage: typically 3 V to 18 V
- CMOS-compatible inputs; low power consumption
- Suitable for digital division and timing applications
- Available in the BDTR2G package (surface-mount)
Note: For exact pinout, timing, and any optional features, please refer to the official datasheet.
- 8-stage binary up/down counter
- Direction control via Up and Down inputs (cascadable)
- Asynchronous clear (reset to zero)
- Ripple Carry Out (RCO) for cascading to additional stages
- Wide supply voltage: typically 3 V to 18 V
- CMOS-compatible inputs; low power consumption
- Suitable for digital division and timing applications
- Available in the BDTR2G package (surface-mount)
Note: For exact pinout, timing, and any optional features, please refer to the official datasheet.
Pinout
Pin count: 16 pins.
Function: MC14538BDTR2G is a CMOS 4-to-16 line decoder/demultiplexer. It decodes a 4-bit binary input into one of 16 outputs (one-hot) with an enable input to activate the device.
Function: MC14538BDTR2G is a CMOS 4-to-16 line decoder/demultiplexer. It decodes a 4-bit binary input into one of 16 outputs (one-hot) with an enable input to activate the device.
Manufacturer
- Manufacturer: Motorola (Motorola Semiconductor; now part of NXP Semiconductors).
- What kind of company: A multinational technology company that designs and manufactures semiconductors and electronics for communications and other applications.
- What kind of company: A multinational technology company that designs and manufactures semiconductors and electronics for communications and other applications.
Application
Applications of MC14538BDTR2G (4-bit synchronous up/down counter) include:
- Digital counters in timing circuits, clocks, and timers
- Frequency division and rate measurement (divide-by-N)
- Up/down counting for position or direction control (robotics, motor drives)
- Event counting in instrumentation and test equipment
- Sequence generation and simple finite-state machines
- Display counting for LED/LCD segments and display drivers (4-bit counters)
- Digital counters in timing circuits, clocks, and timers
- Frequency division and rate measurement (divide-by-N)
- Up/down counting for position or direction control (robotics, motor drives)
- Event counting in instrumentation and test equipment
- Sequence generation and simple finite-state machines
- Display counting for LED/LCD segments and display drivers (4-bit counters)
Package
PDIP-16 (Plastic DIP) package in Tape-and-Reel (TR) packaging.
