SN74ABT162841 - 20-Bit Bus-Interface D-Type Latch | TI
MPN: SN74ABT162841 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.5 | $2.50 |
| 10 | $2.2 | $22.00 |
| 100 | $1.8 | $180.00 |
| 500 | $1.5 | $750.00 |
| 1,000 | $1.2 | $1,200.00 |
Drop-in alternatives for SN74ABT162841 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:
SN74ABT162841DLR
β Drop-Inπ Reference alternative (not in catalog)
SN74ABT162841DGVR
β Drop-Inπ Reference alternative (not in catalog)
SN74ABT162841DL
β Drop-Inπ Reference alternative (not in catalog)
74ABT162841DL
β Drop-Inπ Reference alternative (not in catalog)
SN74ABT162841DGGR
β Drop-Inπ Reference alternative (not in catalog)
SN74ABT162841 Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Number of Bits per Channel | 10 |
| Logic Family | ABT |
| Output Type | 3-State |
| Supply Voltage Range | 4.5 V to 5.5 V |
| Propagation Delay Time | 4.6 ns (typical) |
| Output Current | [DATA_NEEDED: Output current] |
| Operating Temperature Range | -40Β°C to 85Β°C |
| Package Type | 56-SSOP (DL), 56-TSSOP (DLR) |
| Mounting Type | Surface Mount |
| Latch Type | D-Type Transparent |
| Input Type | Noninverting |
| Output Ground Bounce | <0.8 V at VCC = 5 V, TA = 25Β°C |
| Latch-Up Performance | Exceeds 500 mA per JEDEC |
| RoHS Status | Compliant |
SN74ABT162841 Pin Configuration
| Pin 1 | 1D1 β Data input 1 for channel 1 |
| Pin 2 | 1D2 β Data input 2 for channel 1 |
| Pin 3 | 1D3 β Data input 3 for channel 1 |
| Pin 4 | 1D4 β Data input 4 for channel 1 |
| Pin 5 | 1D5 β Data input 5 for channel 1 |
| Pin 6 | 1D6 β Data input 6 for channel 1 |
| Pin 7 | 1D7 β Data input 7 for channel 1 |
| Pin 8 | 1D8 β Data input 8 for channel 1 |
| Pin 9 | 1D9 β Data input 9 for channel 1 |
| Pin 10 | 1D10 β Data input 10 for channel 1 |
| Pin 11 | GND β Ground |
| Pin 12 | 1LE β Latch enable for channel 1 |
| Pin 13 | 1OE β Output enable for channel 1 (active low) |
| Pin 14 | 1Q1 β Output 1 for channel 1 |
| Pin 15 | 1Q2 β Output 2 for channel 1 |
| Pin 16 | 1Q3 β Output 3 for channel 1 |
| Pin 17 | 1Q4 β Output 4 for channel 1 |
| Pin 18 | 1Q5 β Output 5 for channel 1 |
| Pin 19 | 1Q6 β Output 6 for channel 1 |
| Pin 20 | 1Q7 β Output 7 for channel 1 |
| Pin 21 | 1Q8 β Output 8 for channel 1 |
| Pin 22 | 1Q9 β Output 9 for channel 1 |
| Pin 23 | 1Q10 β Output 10 for channel 1 |
| Pin 24 | GND β Ground |
| Pin 25 | 2D1 β Data input 1 for channel 2 |
| Pin 26 | 2D2 β Data input 2 for channel 2 |
| Pin 27 | 2D3 β Data input 3 for channel 2 |
| Pin 28 | 2D4 β Data input 4 for channel 2 |
| Pin 29 | 2D5 β Data input 5 for channel 2 |
| Pin 30 | 2D6 β Data input 6 for channel 2 |
| Pin 31 | 2D7 β Data input 7 for channel 2 |
| Pin 32 | 2D8 β Data input 8 for channel 2 |
| Pin 33 | 2D9 β Data input 9 for channel 2 |
| Pin 34 | 2D10 β Data input 10 for channel 2 |
| Pin 35 | GND β Ground |
| Pin 36 | 2LE β Latch enable for channel 2 |
| Pin 37 | 2OE β Output enable for channel 2 (active low) |
| Pin 38 | 2Q1 β Output 1 for channel 2 |
| Pin 39 | 2Q2 β Output 2 for channel 2 |
| Pin 40 | 2Q3 β Output 3 for channel 2 |
| Pin 41 | 2Q4 β Output 4 for channel 2 |
| Pin 42 | 2Q5 β Output 5 for channel 2 |
| Pin 43 | 2Q6 β Output 6 for channel 2 |
| Pin 44 | 2Q7 β Output 7 for channel 2 |
| Pin 45 | 2Q8 β Output 8 for channel 2 |
| Pin 46 | 2Q9 β Output 9 for channel 2 |
| Pin 47 | 2Q10 β Output 10 for channel 2 |
| Pin 48 | GND β Ground |
| Pin 49 | VCC β Power supply (5V) |
| Pin 50 | VCC β Power supply (5V) |
| Pin 51 | VCC β Power supply (5V) |
| Pin 52 | VCC β Power supply (5V) |
| Pin 53 | GND β Ground |
| Pin 54 | GND β Ground |
| Pin 55 | GND β Ground |
| Pin 56 | 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
SN74ABT162841 is suitable for 6 applications: Memory Address Latching, Data Bus Buffering, Industrial Control Interfaces, Telecommunications Equipment, Test and Measurement Equipment, Automotive Electronics.
Memory Address Latching
The SN74ABT162841 is used to latch address lines in microprocessor and memory systems. Its 20-bit width and 3-state outputs allow it to capture a full address bus and hold it stable during memory access cycles. The fast propagation delay of 4.6 ns ensures minimal timing skew, and the high drive capability handles the capacitive load of multiple memory devices. The flow-through architecture simplifies PCB routing, reducing signal crosstalk and improving signal integrity in high-speed designs.
Recommended
Data Bus Buffering
In microprocessor systems, the SN74ABT162841 can buffer data buses, providing isolation and driving capability. Its 3-state outputs allow multiple devices to share the bus without contention, and the Ioff feature supports hot insertion. The device's low ground bounce (<0.8V) minimizes noise on the bus, ensuring reliable data transfer. With a 5V supply, it is compatible with legacy TTL logic levels, making it ideal for mixed-voltage systems.
Recommended
Industrial Control Interfaces
The SN74ABT162841 is used in industrial control systems to interface between a controller and field devices. Its wide operating temperature range (-40Β°C to 85Β°C) and robust latch-up performance (>500 mA) make it suitable for harsh environments. The 3-state outputs allow multiple control modules to share a common bus, and the high drive capability ensures signals reach remote sensors and actuators without degradation. The device's flow-through pinout simplifies wiring in backplane designs.
Recommended
Telecommunications Equipment
In telecommunications, the SN74ABT162841 is used for data latching in switching and routing equipment. Its high-speed operation (4.6 ns propagation delay) supports high-throughput data paths, and the 3-state outputs enable bus sharing in multi-line systems. The device's low power dissipation, thanks to BiCMOS technology, is critical in densely populated equipment racks. The hot insertion capability allows line cards to be replaced without powering down the system, improving serviceability.
Recommended
Test and Measurement Equipment
The SN74ABT162841 is used in test and measurement instruments to capture digital signals for analysis. Its 20-bit width allows simultaneous sampling of multiple channels, and the 3-state outputs enable connection to a shared data acquisition bus. The device's high drive capability ensures signals are transmitted accurately over long cables, and the low ground bounce preserves signal integrity. The flow-through architecture simplifies PCB design in compact instruments.
Recommended
Automotive Electronics
The SN74ABT162841 is used in automotive electronics for body control modules and infotainment systems. Its wide temperature range and robust latch-up performance meet automotive requirements. The 3-state outputs allow multiple ECUs to share a bus, and the low power dissipation reduces heat in the cabin. The device's hot insertion capability is useful for diagnostic and programming interfaces. However, for AEC-Q100 qualified parts, consider the SN74ABT162841-Q1 variant if available.
Recommended
Recommended Products Summary
Engineering reference data for SN74ABT162841 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74ABT162841DLR | SN74ABT162841DGVR | 74ABT162841DL |
|---|---|---|---|---|
| Package | 56-SSOP (DL) | 56-TSSOP (DLR) | 56-TVSOP (DGV) | 56-SSOP (DL) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Number of Bits | 20 | 20 | 20 | 20 |
| Supply Voltage | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V |
| Propagation Delay | 4.6 ns | 4.6 ns | 4.6 ns | [DATA_NEEDED] |
| Output Type | 3-State | 3-State | 3-State | 3-State |
| Operating Temperature | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C | -40Β°C to 85Β°C |
| RoHS | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- 20-bit width in a single package (vs SN74ABT162245 (16-bit transceiver))
- Flow-through architecture (vs SN74ABT162841DLR (TSSOP))
- Hot insertion support (vs 74ABT162841DL (NXP))
Design Notes
The SN74ABT162841 has a flow-through architecture with inputs on one side and outputs on the other, which simplifies PCB layout. Use a 0.1uF decoupling capacitor near each VCC pin (pins 49-52) and connect all GND pins (11, 24, 35, 48, 53-56) to a solid ground plane. Keep traces short to minimize inductance and reduce ground bounce.
The outputs have equivalent 25-ohm series resistors, which help match impedance and reduce ringing. For long traces or high capacitive loads, consider adding external series resistors if needed. The device's low ground bounce (<0.8V) helps maintain signal integrity, but proper termination is still recommended for high-speed signals.
Ensure that the OE (output enable) inputs are not left floating; tie them to GND to enable outputs or to VCC to disable. The LE (latch enable) inputs should be driven with clean signals to avoid unintended latching. Also, do not exceed the absolute maximum ratings, and ensure the supply voltage is within 4.5V to 5.5V to avoid damage.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified; for automotive, consider SN74ABT162841-Q1 if available.
