My Inquiry
My Account
Texas Instruments CD74ACT244M96
- Part No.:
- CD74ACT244M96
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CD74ACT244M96.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,645
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CD74ACT244M96 from Texas Instruments is a 3-state octal buffer/line driver in SOIC-20 package, operating at 4.5–5.5 V supply, delivering ±24 mA output drive per pin with balanced propagation delays (tPLH/tPHL ≤ 8.7 ns @ 5 V), and designed for bus interface and data routing in industrial control systems.
For engineers reviewing the CD74ACT244M96 datasheet, CD74ACT244M96 pinout, CD74ACT244M96 application, or CD74ACT244M96 equivalent, key selection criteria include TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V), 50-Ω transmission-line drive capability, dual active-low output enables (1OE, 2OE), and −40°C to +85°C industrial temperature range compliance.
Technical Context
The CD74ACT244M96 implements two independent 4-bit banks (Bank 1: pins 2,4,6,8 → 12,14,16,18; Bank 2: pins 11,13,15,17 → 3,5,7,9), each controlled by its own active-low output enable (1OE on pin 1, 2OE on pin 19). All inputs are TTL-compatible with VIH ≥ 2 V and VIL ≤ 0.8 V at VCC = 4.5–5.5 V.
It uses Advanced CMOS (ACT) process for bipolar-speed performance (sub-9 ns propagation) with CMOS power efficiency (ICC ≤ 160 μA max), supports simultaneous switching noise immunity via VOHV ≥ 4 V and VOLP ≤ 1 V, and features SCR-latch-up resistance per JEDEC JESD78.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5–5.5 V - Ensures compatibility with 5-V TTL and mixed-voltage logic systems without level shifting. |
| Output Drive | ±24 mA per pin - Sufficient to directly drive 50-Ω transmission lines or fan out to 15 FAST ICs. |
| Propagation Delay | ≤ 8.7 ns (tPLH/tPHL, VCC = 5 V) - Enables reliable operation in high-speed address/data bus applications up to ~100 MHz. |
| Input Thresholds | VIH = 2 V, VIL = 0.8 V - Guarantees robust noise margin (>1.2 V) against TTL-level signals across full temperature range. |
| 3-State Leakage | ±5 μA max (IOZ, TA = −40 to +85°C) - Minimizes bus contention current when outputs are disabled. |
| Power Dissipation Cap. | 71 pF (CPD) - Used to calculate dynamic power: PD = VCC² × fi × (CPD + CL), critical for thermal design at high frequencies. |
| Operating Temperature | −40°C to +85°C - Qualified for industrial environments including PLCs, motor drives, and instrumentation. |
Pinout & Package
CD74ACT244M96 is housed in a 20-pin SOIC (DW) package, 12.8 mm × 10.3 mm footprint, with gull-wing leads and RoHS-compliant NiPdAu plating. Thermal pad is absent (RKS not used); no internal thermal pad connection required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (1OE) | Active-low output enable - Bank 1 | Drives all Bank 1 outputs (1Y0–1Y3) into high-impedance when high; enables buffering when low. |
| 2 (1A0), 4 (1A1), 6 (1A2), 8 (1A3) | Inputs - Bank 1 | Accept TTL/CMOS logic signals; internally terminated to avoid floating states in unused configurations. |
| 12 (1Y0), 14 (1Y1), 16 (1Y2), 18 (1Y3) | Outputs - Bank 1 | Provide buffered, inverted-pass-through outputs with ±24 mA drive and fast edge rates (tr/tl = 3 ns). |
| 19 (2OE) | Active-low output enable - Bank 2 | Independent control of Bank 2 outputs (2Y0–2Y3); allows asymmetric bus gating between data lanes. |
| 11 (2A0), 13 (2A1), 15 (2A2), 17 (2A3) | Inputs - Bank 2 | Electrically isolated from Bank 1; supports dual-bus architectures like address/data separation or redundant paths. |
| 3 (2Y3), 5 (2Y2), 7 (2Y1), 9 (2Y0) | Outputs - Bank 2 | Match Bank 1 timing and drive strength; pin order is reversed (2Y3 on pin 3, 2Y0 on pin 9) for PCB layout optimization. |
| 10 (GND), 20 (VCC) | Power terminals | Require local 0.1 µF ceramic bypass capacitors; VCC must be stable within ±5% to maintain VOH/VOL specs. |
Key Features
| Feature | Design Value |
|---|---|
| SCR-latch-up-resistant process | Meets JEDEC JESD78 Class II (≥ 100 mA stress), enabling reliable operation in noisy industrial environments. |
| Balanced tPLH/tPHL propagation | Max skew < 0.9 ns (8.7 ns vs. 8.6 ns) ensures clean parallel bus timing without added setup/hold margin. |
| TTL-compatible input thresholds | VIH = 2 V / VIL = 0.8 V at VCC = 5 V guarantees interoperability with legacy 74LS/74F logic without external biasing. |
| 50-Ω transmission-line drive | Validated at +85°C per datasheet test condition - eliminates need for external series termination in point-to-point links. |
| Low quiescent current | ICC ≤ 80 μA (typical) at +85°C reduces standby power in always-on control modules and battery-backed systems. |
Applications
| Industrial Bus Interface | Microcontroller I/O Expansion |
|---|---|
|
Use Scenario: Isolating and driving 8-bit parallel data buses between PLC CPU and I/O modules over 10–20 cm PCB traces. IC Role / Device Role / Timing Role: Bidirectional buffer with independent bank enables, providing signal integrity and noise isolation between voltage domains. Use Value: ±24 mA drive and 50-Ω line matching eliminate reflections and ringing, reducing bit error rate in real-time control loops. |
Use Scenario: Expanding GPIO count of an ARM Cortex-M4 MCU to interface with 8-channel ADC, LED array, and relay drivers. IC Role / Device Role / Timing Role: Unidirectional non-inverting buffer that translates MCU logic levels to higher-current peripheral interfaces. Use Value: Sub-9 ns propagation delay preserves timing margins in 50-MHz peripheral clock domains while maintaining low power. |
| Test Equipment Signal Routing | Digital Audio Data Distribution |
|
Use Scenario: Multiplexing digital stimulus signals from multiple pattern generators onto shared DUT test ports in ATE systems. IC Role / Device Role / Timing Role: 3-state line driver enabling time-division sharing of high-speed digital channels without bus contention. Use Value: Low 3-state leakage (±5 μA) prevents signal bleed during channel switching, ensuring measurement accuracy across 16-channel setups. |
Use Scenario: Distributing I²S left/right channel data and frame sync signals from SoC to four stereo DACs in pro-audio gear. IC Role / Device Role / Timing Role: Clock-tolerant buffer replicating synchronous digital audio streams with matched trace-length delay. Use Value: Balanced tPLH/tPHL minimizes inter-channel skew (<1 ns), preserving phase coherence in multi-DAC playback systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT244N | PDIP-20 package; identical electrical specs but larger footprint and lower thermal performance (RθJA = 40°C/W vs. 101.2°C/W). | Suitable for prototyping or through-hole assembly; not recommended for high-density or thermally constrained industrial PCBs. | Select SN74ACT244N only when manual soldering or socket-based validation is required; prefer CD74ACT244M96 for volume SMT production. |
| 74ACT244SCX | SOIC-20 from ON Semiconductor; matches VCC, drive, and timing specs but has higher max ICC (200 μA) and no documented SCR-latch-up rating. | Acceptable in commercial-grade equipment; not recommended for safety-critical or extended-temperature industrial deployments. | Choose 74ACT244SCX only if TI supply continuity is constrained; verify latch-up immunity separately for mission-critical designs. |
Compared with SN74ACT244N and 74ACT244SCX, CD74ACT244M96 offers superior thermal management in compact layouts, guaranteed SCR-latch-up resistance for harsh environments, and TI's long-term industrial product support roadmap.
Availability
CD74ACT244M96 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded control applications requiring stable component supply, long-life availability, and RoHS-compliant SMT packaging.
Supply support for CD74ACT244M96 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 specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in industrial, automotive, and communications markets.
CD74ACT244M96 belongs to TI's legacy CD74ACT logic family, engineered for high-speed, low-power bus interfacing in industrial control, instrumentation, and legacy system upgrades where TTL compatibility and reliability are essential.
FAQ
What is the maximum operating frequency supported by CD74ACT244M96 in a 50-Ω transmission line configuration?
The CD74ACT244M96 does not specify a hard maximum frequency, but its 8.7 ns propagation delay and 3 ns rise/fall times support reliable operation up to approximately 100 MHz in point-to-point 50-Ω traces. System-level timing must account for board trace delays and load capacitance; for sustained 50-MHz bus operation, ensure CL ≤ 50 pF and use proper termination.
Can CD74ACT244M96 operate with a 3.3-V supply?
No. CD74ACT244M96 is an ACT-series device requiring 4.5–5.5 V supply per datasheet Section 4.2. Using 3.3 V violates recommended operating conditions and results in undefined VIH/VIL thresholds, degraded output drive, and potential functional failure. For 3.3-V systems, consider CD74AC244M96 (1.5–5.5 V) instead.
How are the output enable pins (1OE and 2OE) configured on CD74ACT244M96?
Both 1OE (pin 1) and 2OE (pin 19) are active-low enables. When pulled low, they enable their respective 4-bit banks (Bank 1: pins 2/4/6/8 → 12/14/16/18; Bank 2: pins 11/13/15/17 → 3/5/7/9). When high, outputs enter high-impedance state. They operate independently, allowing selective gating of data lanes.
Does CD74ACT244M96 require external pull-up or pull-down resistors on unused inputs?
Yes. Per TI layout guidelines (Section 7.2), all unused inputs must be tied to VCC or GND to prevent floating states that cause increased ICC, oscillation, or ESD susceptibility. For CD74ACT244M96, tie unused A-inputs (e.g., 1A2, 1A3) to GND if inactive, or to VCC if logic-high default is needed - never leave open.
What is the meaning of the "M96" suffix in CD74ACT244M96?
The "M96" suffix denotes a SOIC-20 package supplied in large tape-and-reel format (2000 units per reel), with NiPdAu lead finish and Moisture Sensitivity Level 1 (unlimited floor life at ≤30°C/60% RH). It replaces the obsolete "M" variant and is TI's standard production version for automated SMT assembly.
CD74ACT244M96 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CD74ACT244M96 FAQ
1.How can I place an order for CD74ACT244M96 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74ACT244M96 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 CD74ACT244M96 reliable?
The price and inventory of CD74ACT244M96 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74ACT244M96 is usually 5 days.
3.What payment methods are accepted for CD74ACT244M96?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74ACT244M96 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74ACT244M96?
CD74ACT244M96 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74ACT244M96 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 CD74ACT244M96?
For technical support, including CD74ACT244M96 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74ACT244M96 requirements.
6.How does Aetrix verify that CD74ACT244M96 is sourced from the original manufacturer or authorized distributors?
All CD74ACT244M96 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 CD74ACT244M96 meets industry standards.
7.What is the process for return or replacement of CD74ACT244M96?
All CD74ACT244M96 units undergo pre-shipment inspection (PSI). If there is an issue with CD74ACT244M96, 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 CD74ACT244M96 part is unused and in its original packaging.
Return procedure for CD74ACT244M96:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CD74ACT244M96 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
