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Texas Instruments 74ABTH16823DGGRG4
- Part No.:
- 74ABTH16823DGGRG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ABTH16823DGGRG4.pdf
- Description:
- IC FF D-TYPE DUAL 9BIT 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,276
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Product details
Overview
74ABTH16823DGGRG4 from Texas Instruments is an 18-bit bus-interface D-type flip-flop with 3-state outputs, designed for high-capacitance bus driving in industrial and computing systems. It supports dual 9-bit or single 18-bit operation, features bus-hold on all data inputs, delivers ±32-mA/64-mA output drive, and operates at up to 150 MHz across 4.5 V–5.5 V supply range.
For engineers reviewing the 74ABTH16823DGGRG4 datasheet, 74ABTH16823DGGRG4 pinout, 74ABTH16823DGGRG4 application, or 74ABTH16823DGGRG4 equivalent, this device is selected for high-speed bidirectional bus buffering, I/O port expansion, and parity-enabled register interfaces where ground bounce control (<1 V VOLP), power-up high-impedance behavior, and distributed VCC/GND layout optimization are critical.
Technical Context
The 74ABTH16823DGGRG4 implements two independent 9-bit D-type flip-flop sections, each with dedicated clock-enable (CLKEN), clear (CLR), and output-enable (OE) controls. Its EPIC-IIB BiCMOS architecture enables low-power, high-speed operation while maintaining TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) and robust ESD protection (>2000 V HBM).
It uses flow-through pin mapping to minimize PCB trace length and switching noise, with distributed VCC and GND pins across the 56-pin TSSOP package. Bus-hold circuitry eliminates external pullup/pulldown resistors on all 18 data inputs, and OE remains fully decoupled from internal latch timing-allowing data retention or updates during output disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ABT - Advanced BiCMOS Technology with TTL-compatible inputs and high-drive 3-state outputs |
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5-V industrial and legacy computing rails |
| Max Clock Frequency | 150 MHz - Enables use in high-speed backplane and memory interface timing paths |
| Output Drive | –32 mA IOH / +64 mA IOL - Drives heavily loaded buses without external buffers or termination |
| Propagation Delay | tPLH/tPHL ≤ 5.5 ns (VCC = 5 V, CL = 50 pF) - Supports tight setup/hold timing margins in synchronous designs |
| Bus-Hold Current | ±100 µA at VI = 0.8 V or 2 V - Actively holds floating inputs at valid logic levels, eliminating external biasing |
| Power-Up State | High-impedance when VCC < 2.1 V - Prevents bus contention during power sequencing |
Pinout & Package
74ABTH16823DGGRG4 is housed in a 56-pin Thin Shrink Small-Outline Package (TSSOP, DGG), measuring 13.9 mm × 6.0 mm × 1.2 mm, JEDEC MO-153 compliant, with 0.5-mm lead pitch and RoHS-compliant green finish (no Sb/Br).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CLR, 2CLR | Asynchronous Clear Input | Active-low reset for respective 9-bit section; forces Q outputs low independently of clock |
| 1CLK, 2CLK | Clock Input | Low-to-high edge-triggered sampling point for D inputs; synchronized with CLKEN state |
| 1CLKEN, 2CLKEN | Clock Enable Input | Disables clock buffer when high; latches current Q state without affecting OE or bus-hold |
| 1OE, 2OE | Output Enable Input | Active-low control for 3-state output drivers; no effect on internal flip-flop operation |
| 1D1–1D9, 2D1–2D9 | Data Inputs | 18 total TTL-compatible inputs with integrated bus-hold; require no external biasing |
| 1Q1–1Q9, 2Q1–2Q9 | Registered Outputs | 18 high-drive 3-state outputs; support hot-swap and shared-bus arbitration |
| VCC, GND | Power & Ground | Distributed across package (12 VCC, 12 GND pins) to suppress simultaneous switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins arranged on opposite sides of package to enable straight PCB trace routing and reduce crosstalk |
| Distributed VCC/GND pinning | 12 power and 12 ground pins minimize impedance in high-frequency return paths and suppress ground bounce (VOLP < 1 V) |
| Integrated bus-hold | Eliminates need for 18 external pullup/pulldown resistors on data lines-reducing BOM count and board area |
| Power-up/down high-Z | Automatically enters high-impedance state when VCC is between 0–2.1 V-preventing bus conflicts during power sequencing |
| High-drive 3-state outputs | –32 mA source / +64 mA sink capability allows direct connection to long, unterminated transmission lines or multi-drop buses |
Applications
| Backplane Data Buffering | I/O Port Expansion |
|---|---|
Use Scenario: Isolating and regenerating parallel address/data signals across a 16–32-bit backplane with >100 pF load capacitance per line. IC Role / Device Role / Timing Role: 18-bit registered transceiver providing edge-aligned data capture, bus isolation via 3-state control, and clock-enable gating for burst-mode transfers. Use Value: High-output drive (64 mA IOL) maintains signal integrity across long traces; bus-hold prevents glitches on unasserted data lines during idle cycles. | Use Scenario: Expanding microcontroller GPIO count to drive 18-bit peripheral interface (e.g., LCD controller, FPGA configuration bus) with direction control. IC Role / Device Role / Timing Role: Bidirectional I/O register with independent OE per 9-bit bank, enabling time-multiplexed read/write handshaking without external direction logic. Use Value: Dual 9-bit sections allow split control of upper/lower byte lanes; CLKEN permits synchronous update locking during status polling intervals. |
| Parity-Enabled Bus Driver | Industrial Control Register Bank |
Use Scenario: Driving a 16-bit data bus plus 2-bit parity lines in a fault-tolerant PLC backplane where bit errors must be detected and flagged. IC Role / Device Role / Timing Role: 18-bit register holding main data (16 bits) and parity bits (2 bits), with synchronous update on common clock and independent OE for bus release. Use Value: Single-device integration avoids skew between data and parity paths; 3-state outputs allow shared bus arbitration with master and slave controllers. | Use Scenario: Storing and presenting real-time sensor status (e.g., 18-channel thermocouple alarms) to a host processor via parallel interface with minimal latency. IC Role / Device Role / Timing Role: Working register capturing asynchronous sensor events on clock edge, then presenting stable snapshot to CPU via gated OE strobe. Use Value: Asynchronous CLR allows hardware-initiated alarm reset; bus-hold preserves last-read state if CPU disconnects unexpectedly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus-interface flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT162244DGGR | 16-bit non-inverting buffer (no flip-flop functionality); lacks clock, CLR, CLKEN, and storage capability | Suitable only for level-shifting or fanout expansion-not for registered data capture or timing control | Select when synchronous registration is unnecessary and pure 3-state buffering suffices |
| 74LVTH162244DLR | Lower-voltage (3.3 V) 16-bit buffer; incompatible VCC range (2.7–3.6 V), no bus-hold, lower drive (–24/+24 mA) | Designed for mixed-voltage 3.3-V systems; cannot replace 5-V 74ABTH16823DGGRG4 without level translation | Choose only in new 3.3-V designs where power reduction outweighs need for 5-V compatibility and storage |
Compared with SN74ABT162244DGGR and 74LVTH162244DLR, the 74ABTH16823DGGRG4 uniquely combines 18-bit registered storage, 5-V operation, bus-hold, and high-drive 3-state outputs-making it irreplaceable in applications requiring edge-triggered data capture, power-sequencing safety, and legacy bus compliance.
Availability
74ABTH16823DGGRG4 is available at Aetrix Electronics and suitable for industrial control systems, legacy computing backplanes, and test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74ABTH16823DGGRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The ABT logic family-including the 74ABTH16823DGGRG4-is engineered for high-speed, low-noise 5-V bus interfacing in mission-critical industrial and computing infrastructure where reliability, timing precision, and noise immunity are essential.
FAQ
What is the operating temperature range for the 74ABTH16823DGGRG4?
The 74ABTH16823DGGRG4 is rated for industrial operation from –40°C to +85°C. This range is specified for the SN74ABTH16823 variant, which matches the DGG package and commercial-grade marking of the 74ABTH16823DGGRG4. It does not support the extended military range (–55°C to 125°C) reserved for the SN54ABTH16823 WD-package variant.
Does the 74ABTH16823DGGRG4 support hot-swap or live-insertion?
Yes-the 74ABTH16823DGGRG4 supports controlled hot-swap via its power-up/down high-impedance feature: when VCC is below 2.1 V, all outputs automatically enter high-Z state, preventing bus contention. For full hot-swap robustness, tie OE to VCC through a pullup resistor (minimum value determined by driver sink capability) to guarantee high-Z above 2.1 V.
Can the 74ABTH16823DGGRG4 be used as a single 18-bit register or two independent 9-bit registers?
Yes-the 74ABTH16823DGGRG4 supports both configurations. Its dual-section architecture provides separate 1CLK/1CLKEN/1CLR/1OE and 2CLK/2CLKEN/2CLR/2OE controls, allowing either unified 18-bit operation (with tied clocks and enables) or fully independent 9-bit latching-enabling flexible partitioning for byte-wide protocols or split bus control.
What is the purpose of bus-hold circuitry on the 74ABTH16823DGGRG4 data inputs?
The bus-hold circuitry on all 18 data inputs of the 74ABTH16823DGGRG4 actively maintains a valid logic level (VIH or VIL) on unused or floating inputs, eliminating the need for external pullup or pulldown resistors. It sinks or sources ±100 µA at threshold voltages, ensuring deterministic behavior during power-up, standby, or disconnected states without increasing board area or BOM cost.
How does the 74ABTH16823DGGRG4 handle ground bounce during switching?
The 74ABTH16823DGGRG4 minimizes ground bounce via distributed VCC and GND pins (12 each) and EPIC-IIB BiCMOS design, achieving typical VOLP < 1 V at VCC = 5 V and TA = 25°C. This low ground bounce ensures signal integrity in high-speed, multi-bit parallel interfaces where simultaneous output switching could otherwise corrupt adjacent lines or cause false triggering.
74ABTH16823DGGRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABTH
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Master Reset
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 9
- Clock Frequency:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 5.5ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 500 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
74ABTH16823DGGRG4 FAQ
1.How can I place an order for 74ABTH16823DGGRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABTH16823DGGRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74ABTH16823DGGRG4 reliable?
The price and inventory of 74ABTH16823DGGRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABTH16823DGGRG4 is usually 5 days.
3.What payment methods are accepted for 74ABTH16823DGGRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABTH16823DGGRG4 transactions.
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74ABTH16823DGGRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABTH16823DGGRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74ABTH16823DGGRG4?
For technical support, including 74ABTH16823DGGRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABTH16823DGGRG4 requirements.
6.How does Aetrix verify that 74ABTH16823DGGRG4 is sourced from the original manufacturer or authorized distributors?
All 74ABTH16823DGGRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74ABTH16823DGGRG4 meets industry standards.
7.What is the process for return or replacement of 74ABTH16823DGGRG4?
All 74ABTH16823DGGRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABTH16823DGGRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74ABTH16823DGGRG4 part is unused and in its original packaging.
Return procedure for 74ABTH16823DGGRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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