Specifications
| Type | Description |
|---|---|
| Part Number | SN74ABT244A |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 20-pin SSOP (DB), SOIC (DW), PDIP (N), TSSOP (PW); also J, W, FK packages mentioned |
| Logic function | Octal buffer/line driver with 3-state outputs; noninverting A-to-Y data path |
| Organization | Two 4-bit buffers/line drivers; separate active-low OE inputs |
| Output enable behavior | Y = A when OE = low |
| Output disable behavior | High impedance when OE = high |
| Function table, OE=L A=H | Y=H |
| Function table, OE=L A=L | Y=L |
| Function table, OE=H A=X | Y=Z |
| Supply voltage range, absolute maximum | -0.5 V to 7 V; VCC over operating free-air temperature range |
| Input voltage range, absolute maximum | -0.5 V to 7 V; VI, clamp-current ratings may allow negative-voltage exceedance |
| Output voltage range, absolute maximum | -0.5 V to 5.5 V; VO applied to any output in high or power-off state |
| Output current, absolute maximum low state | 128 mA; current into any output in low state |
| Input clamp current | -18 mA when VI < 0 |
| Output clamp current | -50 mA when VO < 0 |
| Package thermal impedance, DB | 115 °C/W theta-JA |
| Package thermal impedance, DW | 97 °C/W theta-JA |
| Package thermal impedance, N | 67 °C/W theta-JA |
| Package thermal impedance, PW | 128 °C/W theta-JA |
| Storage temperature range | -65 °C to 150 °C, Tstg |
| Supply voltage, recommended | 4.5 V to 5.5 V, VCC |
| High-level input voltage | 2 V min, VIH |
| Low-level input voltage | 0.8 V max, VIL |
| Input voltage, recommended | 0 V to VCC, VI |
| High-level output current | -32 mA, IOH |
| Low-level output current | 64 mA, IOL |
| Input transition rise/fall rate | 5 ns/V max, outputs enabled |
| Operating free-air temperature | -40 °C to 85 °C, TA |
| Input clamp voltage | -1.2 V max at VCC=4.5 V, II=-18 mA |
| High-level output voltage | 2.5 V min at VCC=4.5 V, IOH=-3 mA |
| High-level output voltage | 3 V min at VCC=5 V, IOH=-3 mA |
| High-level output voltage | 2 V min at VCC=4.5 V, IOH=-32 mA |
| Low-level output voltage | 0.55 V max at VCC=4.5 V, IOL=64 mA |
| Input hysteresis | 100 mV typ, Vhys |
| Input current | ±1 µA max at VCC=5.5 V, VI=VCC or GND |
| High-state output leakage current | 10 µA max at VCC=5.5 V, VO=2.7 V |
| Low-state output leakage current | -10 µA max at VCC=5.5 V, VO=0.5 V |
| Power-off leakage current | ±100 µA max at VCC=0, VI or VO <= 5.5 V |
| Output high leakage current | 50 µA max, ICEX, VCC=5.5 V, outputs high |
| Output current test | -50 mA min, -180 mA max at VCC=5.5 V, VO=2.5 V; one output tested at a time |
| Supply current, outputs high | 250 µA max at VCC=5.5 V, VI=VCC or GND, IO=0 |
| Supply current, outputs low | 30 mA max at VCC=5.5 V, VI=VCC or GND, IO=0 |
| Supply current, outputs disabled | 250 µA max at VCC=5.5 V, VI=VCC or GND, IO=0 |
| Delta supply current, data inputs enabled | 1.5 mA max at VCC=5.5 V, one data input at 3.4 V, other inputs at VCC or GND, outputs enabled |
| Delta supply current, data inputs disabled | 0.05 mA max at VCC=5.5 V, one data input at 3.4 V, other inputs at VCC or GND, outputs disabled |
| Delta supply current, control inputs | 1.5 mA max at VCC=5.5 V, one control input at 3.4 V, other inputs at VCC or GND |
| Input capacitance | 3.5 pF typ at VI=2.5 V or 0.5 V |
| Output capacitance | 7.5 pF typ at VO=2.5 V or 0.5 V |
| Propagation delay low-to-high | 1 ns min, 2.6 ns typ, 4.1 ns max at 25°C; 1 ns min, 4.6 ns max over range; A to Y, VCC=5 V, CL=50 pF |
| Propagation delay high-to-low | 1 ns min, 2.9 ns typ, 4.3 ns max at 25°C; 1 ns min, 4.6 ns max over range; A to Y, VCC=5 V, CL=50 pF |
| Output enable time to high | 1.1 ns min, 3.1 ns typ, 4.6 ns max at 25°C; 1.1 ns min, 5.1 ns max over range; OE to Y, tPZH, CL=50 pF |
| Output enable time to low | 2.1 ns min, 4.1 ns typ, 5.6 ns max at 25°C; 2.1 ns min, 6.1 ns max over range; OE to Y, tPZL, CL=50 pF |
| Output disable time from high | 1.8 ns min, 4.1 ns typ, 5.6 ns max at 25°C; 1.8 ns min, 6.6 ns max over range; OE to Y, tPHZ, CL=50 pF |
| Output disable time from low | 1.4 ns min, 3.7 ns typ, 5.2 ns max at 25°C; 1.4 ns min, 5.7 ns max over range; OE to Y, tPLZ, CL=50 pF |
| Load capacitance for switching tests | 50 pF; CL includes probe and jig capacitance |
| Switching test load resistance | 500 ohm pullup/pulldown network |
| Input pulse amplitude for timing tests | 0 V to 3 V |
| Timing threshold voltage | 1.5 V input and output timing reference level |
| Pulse generator repetition rate | <=10 MHz for all input pulses |
| Pulse generator output impedance | 50 ohm, ZO |
| Input pulse rise time | <=2.5 ns, tr |
| Input pulse fall time | <=2.5 ns, tf |
| ESD protection | >2000 V HBM; >200 V machine model; MIL-STD-883 Method 3015; machine model C=200 pF, R=0 |
| Latch-up performance | >500 mA per JEDEC Standard JESD-17 |
| Output ground bounce | <1 V typ, VOLP, VCC=5 V, TA=25°C |
| Datasheet Status | request_only |
Product Overview
The SN74ABT244A is a Texas Instruments octal buffer/line driver for Signal_Chain use where a noninverting A-to-Y path and 3-state outputs are required. Internally, it is arranged as two 4-bit buffers/line drivers, each controlled by a separate active-low OE input. When OE is low, each Y output follows its A input; when OE is high, the output is placed in high impedance.
Recommended operating conditions specify 4.5 V to 5.5 V VCC, input voltage from 0 V to VCC, 2 V minimum VIH, 0.8 V maximum VIL, -32 mA high-level output current, and 64 mA low-level output current. Operation is specified across -40 °C to 85 °C free-air temperature.
Package options include 20-pin SSOP (DB), SOIC (DW), PDIP (N), and TSSOP (PW), with J, W, and FK packages also mentioned. Thermal impedance values are listed for DB, DW, N, and PW packages. The device is suited to 5-V digital buffering, line driving, bus isolation, and controlled high-impedance signal sharing.
Key Features
- Octal buffer/line driver with 3-state outputs
- Noninverting A-to-Y data path
- Two 4-bit sections with separate active-low OE inputs
- Outputs follow inputs when OE is low
- Outputs enter high impedance when OE is high
- Recommended VCC range from 4.5 V to 5.5 V
- 64 mA low-level and -32 mA high-level output current
- Specified operation from -40 °C to 85 °C
- A-to-Y propagation delay up to 4.6 ns over range
- ESD protection exceeds 2000 V HBM
Typical Applications
- 5-V digital bus buffering
- Line driver interfaces
- 3-state bus isolation
- Noninverting signal distribution
- Output-enable controlled routing
- Parallel data path buffering
- Backplane or board-level logic interfaces
Procurement Notes
When requesting a quote for SN74ABT244A, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What logic function does the SN74ABT244A provide?
The SN74ABT244A provides an octal buffer/line-driver function with 3-state outputs. Its data path is noninverting, so enabled outputs follow the corresponding A input level at the Y output.
How are the output-enable inputs used on this device?
The device is organized as two 4-bit buffers or line drivers with separate active-low OE inputs. When OE is low, Y equals A; when OE is high, the corresponding outputs are placed in high impedance.
What supply range is recommended for SN74ABT244A operation?
For the SN74ABT244A, the recommended VCC range is 4.5 V to 5.5 V. Recommended input voltage is 0 V to VCC, with 2 V minimum VIH and 0.8 V maximum VIL.
Which packages are listed for the SN74ABT244A?
The extracted package information lists 20-pin SSOP (DB), SOIC (DW), PDIP (N), and TSSOP (PW) packages. J, W, and FK packages are also mentioned in the datasheet-derived facts.
What timing performance is specified for A-to-Y propagation?
At VCC=5 V and CL=50 pF, A-to-Y low-to-high propagation delay is listed as 1 ns minimum, 2.6 ns typical, and 4.1 ns maximum at 25°C, with a 4.6 ns maximum over range.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 13, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.