SN74ALVCH162373 - 16-Bit Transparent Latch | Texas Instruments
MPN: SN74ALVCH162373 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.25 | $1.25 |
| 10 | $1.12 | $11.20 |
| 100 | $0.95 | $95.00 |
| 500 | $0.85 | $425.00 |
| 1,000 | $0.75 | $750.00 |
Drop-in alternatives for SN74ALVCH162373 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74ALVCH162373GR
β Drop-Inπ Reference alternative (not in catalog)
SN74ALVCH162373DL
β Drop-Inπ Reference alternative (not in catalog)
SN74ALVCH162373KR
β Drop-Inπ Reference alternative (not in catalog)
74ALVCH162373GRE4
β Drop-Inπ Reference alternative (not in catalog)
SN74ALVCH162374
β‘ Same Packageπ Reference alternative (not in catalog)
74ALVCH162373
β Drop-Inπ Reference alternative (not in catalog)
SN74ALVCH162373 Maximum Ratings & Electrical Characteristics
| Logic Family | ALVCH |
| Number of Channels | 2 |
| Number of Bits per Channel | 8 |
| Output Type | 3-State |
| Supply Voltage Range | 2.3 V to 3.6 V |
| Propagation Delay Time | 4.1 ns (typical at 3.3V) |
| Output Current | Β±12 mA at 3.3V |
| Input Type | Bus Hold |
| Operating Temperature Range | -40Β°C to 85Β°C |
| Package Type | 48-SSOP, 56-BGA, 48-TSSOP |
| Mounting Type | Surface Mount |
| Latch-Up Performance | Exceeds 250 mA per JESD 17 |
| ESD Protection | 2 kV HBM (typical) |
| RoHS Status | Compliant |
| Series | Widebus |
SN74ALVCH162373 Pin Configuration
| Pin 1 | 1OE β Output enable for latch 1 (active low) |
| Pin 2 | 1D0 β Data input 0 for latch 1 |
| Pin 3 | 1D1 β Data input 1 for latch 1 |
| Pin 4 | 1D2 β Data input 2 for latch 1 |
| Pin 5 | 1D3 β Data input 3 for latch 1 |
| Pin 6 | 1D4 β Data input 4 for latch 1 |
| Pin 7 | 1D5 β Data input 5 for latch 1 |
| Pin 8 | 1D6 β Data input 6 for latch 1 |
| Pin 9 | 1D7 β Data input 7 for latch 1 |
| Pin 10 | GND β Ground |
| Pin 11 | 1LE β Latch enable for latch 1 (active high) |
| Pin 12 | 1Q0 β Output 0 for latch 1 |
| Pin 13 | 1Q1 β Output 1 for latch 1 |
| Pin 14 | 1Q2 β Output 2 for latch 1 |
| Pin 15 | 1Q3 β Output 3 for latch 1 |
| Pin 16 | 1Q4 β Output 4 for latch 1 |
| Pin 17 | 1Q5 β Output 5 for latch 1 |
| Pin 18 | 1Q6 β Output 6 for latch 1 |
| Pin 19 | 1Q7 β Output 7 for latch 1 |
| Pin 20 | GND β Ground |
| Pin 21 | 2OE β Output enable for latch 2 (active low) |
| Pin 22 | 2D0 β Data input 0 for latch 2 |
| Pin 23 | 2D1 β Data input 1 for latch 2 |
| Pin 24 | 2D2 β Data input 2 for latch 2 |
| Pin 25 | 2D3 β Data input 3 for latch 2 |
| Pin 26 | 2D4 β Data input 4 for latch 2 |
| Pin 27 | 2D5 β Data input 5 for latch 2 |
| Pin 28 | 2D6 β Data input 6 for latch 2 |
| Pin 29 | 2D7 β Data input 7 for latch 2 |
| Pin 30 | GND β Ground |
| Pin 31 | 2LE β Latch enable for latch 2 (active high) |
| Pin 32 | 2Q0 β Output 0 for latch 2 |
| Pin 33 | 2Q1 β Output 1 for latch 2 |
| Pin 34 | 2Q2 β Output 2 for latch 2 |
| Pin 35 | 2Q3 β Output 3 for latch 2 |
| Pin 36 | 2Q4 β Output 4 for latch 2 |
| Pin 37 | 2Q5 β Output 5 for latch 2 |
| Pin 38 | 2Q6 β Output 6 for latch 2 |
| Pin 39 | 2Q7 β Output 7 for latch 2 |
| Pin 40 | GND β Ground |
| Pin 41 | VCC β Power supply (2.3V to 3.6V) |
| Pin 42 | VCC β Power supply |
| Pin 43 | VCC β Power supply |
| Pin 44 | VCC β Power supply |
| Pin 45 | GND β Ground |
| Pin 46 | GND β Ground |
| Pin 47 | GND β Ground |
| Pin 48 | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74ALVCH162373 is suitable for 6 applications: Buffer Register, I/O Port Expansion, Bidirectional Bus Driver, Working Register, Memory Interface, Data Acquisition System.
Buffer Register
The SN74ALVCH162373 is ideal for implementing buffer registers in digital systems. Its 16-bit width and 3-state outputs allow temporary storage and isolation of data between different logic blocks. The bus-hold feature eliminates external pull-ups, simplifying design. With a propagation delay of 4.1 ns, it supports high-speed data paths. The device can be used as two 8-bit latches or one 16-bit latch, providing flexibility in register design. Its low-voltage operation (2.3V-3.6V) makes it suitable for modern low-power systems.
Recommended
I/O Port Expansion
The SN74ALVCH162373 can be used to expand the I/O capabilities of microcontrollers and processors. By latching data from a data bus, it provides additional output ports with 3-state control, enabling multiple devices to share the same bus. The device's high output drive (Β±12 mA) can directly drive LEDs or other loads. Its low propagation delay ensures minimal timing overhead. The bus-hold feature prevents floating inputs, enhancing system reliability. This application is common in embedded systems and industrial control.
Recommended
Bidirectional Bus Driver
The SN74ALVCH162373 can be configured as a bidirectional bus driver by using two devices or by controlling the direction with external logic. Its 3-state outputs allow multiple drivers to share a bus without contention. The device's low on-resistance and high drive current ensure signal integrity. The bus-hold feature on inputs eliminates the need for external pull-ups, reducing component count. This application is critical in memory interfaces and data communication systems.
Recommended
Working Register
The SN74ALVCH162373 can serve as a working register in CPU or DSP designs, providing temporary storage for intermediate data. Its 16-bit width matches common data bus sizes. The transparent latch mode allows data to pass through when LE is high, and hold when LE is low, enabling synchronous or asynchronous operation. The device's low power consumption and high speed make it suitable for high-performance computing. The 3-state outputs allow connection to shared data buses.
Recommended
Memory Interface
The SN74ALVCH162373 is used in memory interfaces to latch address or data lines. Its 3-state outputs allow multiple memory banks to share a bus. The device's fast propagation delay (4.1 ns) ensures minimal access time. The bus-hold feature prevents floating lines during bus turnaround. The low-voltage operation is compatible with modern memory devices. This application is common in embedded systems and computer architecture.
Recommended
Data Acquisition System
The SN74ALVCH162373 can be used in data acquisition systems to latch digital data from ADCs or sensors. Its 16-bit width allows capturing multiple channels simultaneously. The 3-state outputs enable connection to a shared data bus. The device's low power consumption is beneficial for battery-powered systems. The bus-hold feature simplifies interfacing with sensors that have weak drive capability. This application is common in industrial monitoring and test equipment.
Recommended
Recommended Products Summary
Engineering reference data for SN74ALVCH162373 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74ALVCH162373GR | SN74ALVCH162373DL | SN74ALVCH162373KR | 74ALVCH162373 |
|---|---|---|---|---|---|
| Package | 48-SSOP, 56-BGA, 48-TSSOP | 48-TSSOP | 48-SSOP | 56-BGA | 48-TSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Logic Function | Transparent Latch | Transparent Latch | Transparent Latch | Transparent Latch | Transparent Latch |
| Supply Voltage Range | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V |
| Propagation Delay | 4.1 ns (typ) | 4.1 ns (typ) | 4.1 ns (typ) | 4.1 ns (typ) | 4.1 ns (typ) |
| Output Current | Β±12 mA | Β±12 mA | Β±12 mA | Β±12 mA | Β±12 mA |
| Bus Hold | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C |
Key Differentiators
- Bus hold on data inputs (vs 74ALVCH162373 (NXP))
- Multiple package options (vs 74ALVCH162373 (NXP))
- Widebus family compatibility (vs SN74ALVCH162374)
Design Notes
Place a 0.1uF ceramic capacitor close to each VCC pin and a 10uF bulk capacitor at the power entry point. The SN74ALVCH162373 operates from 2.3V to 3.6V; ensure the supply is within this range to avoid improper logic levels. Decoupling is critical to minimize noise-induced glitches on the latch outputs.
For high-speed operation, keep traces short and use controlled impedance if possible. The device has equivalent 26-ohm series resistors on outputs, which helps reduce ringing, but proper termination may still be needed for long traces. Use ground planes to reduce noise and ensure signal integrity.
Do not drive the inputs with voltages higher than VCC to avoid latch-up. The bus-hold feature requires a minimum drive current; if the driving source cannot provide this, the input may not switch correctly. Also, ensure the OE pin is properly controlled to avoid bus contention when multiple devices share a bus.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified; use -Q1 variant for automotive.
