Specifications
| Type | Description |
|---|---|
| Part Number | SN74LVC245APWR |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | TSSOP (PW), 20 pins, 6.50 mm x 4.40 mm body |
| Function | Octal bus transceiver with 3-state outputs; SN74LVC245A device description |
| Supply Voltage Range | 1.65 to 3.6 V; Operating VCC |
| Input Voltage Tolerance | Up to 5.5 V; Inputs accept voltages to 5.5 V |
| Maximum Propagation Delay | 6.3 ns; VCC=3.3 V, -40°C to 85°C |
| Typical Output Ground Bounce | <0.8 V; VCC=3.3 V, TA=25°C |
| Typical Output VOH Undershoot | >2 V; VCC=3.3 V, TA=25°C |
| Ioff Support | Supported; Live insertion, partial-power-down mode, and back-drive protection |
| Mixed-Mode Signal Operation | Supported on all ports; 5-V input/output voltage with 3.3-V VCC |
| Latch-Up Performance | >250 mA; Per JESD17 |
| ESD Protection HBM | 2000 V; Human-body model, all pins |
| ESD Protection CDM | 1000 V; Charged-device model, all pins |
| Pin Count | 20 pins; PW package / SN74LVC245APWR |
| Direction Control Logic | High: A to B; Low: B to A; DIR input function |
| Output Enable Pin | OE; Output enable input, pin 19 for PW package |
| Supply Voltage Absolute Maximum | -0.5 to 6.5 V; VCC supply voltage range |
| Input Voltage Absolute Maximum | -0.5 to 6.5 V; VI input voltage range |
| High-Impedance or Power-Off Output Voltage Absolute Maximum | -0.5 to 6.5 V; VO applied to any output in high-impedance or power-off state |
| Active Output Voltage Absolute Maximum | -0.5 to VCC+0.5 V; VO applied to any output in high or low state |
| Input Clamp Current | -50 mA; VI < 0 V |
| Output Clamp Current | -50 mA; VO < 0 V |
| Continuous Output Current | ±50 mA; Absolute maximum IO |
| Continuous Current Through VCC or GND | ±100 mA; Absolute maximum supply or ground current |
| Storage Temperature Range | -65 to 150 °C; Tstg |
| Recommended Operating Supply Voltage | 1.65 to 3.6 V; Operating mode, TA=25°C, -40°C to 85°C, and -40°C to 125°C |
| Data Retention Supply Voltage | 1.5 V; Data retention only |
| High-Level Input Voltage | 0.65 x VCC min; VCC=1.65 V to 1.95 V |
| High-Level Input Voltage | 1.7 V min; VCC=2.3 V to 2.7 V |
| High-Level Input Voltage | 2.0 V min; VCC=2.7 V to 3.6 V |
| Low-Level Input Voltage | 0.35 x VCC max; VCC=1.65 V to 1.95 V |
| Low-Level Input Voltage | 0.7 V max; VCC=2.3 V to 2.7 V |
| Low-Level Input Voltage | 0.8 V max; VCC=2.7 V to 3.6 V |
| Recommended Input Voltage | 0 to 5.5 V; VI over operating free-air temperature range |
| Recommended Output Voltage | 0 to VCC; VO over operating free-air temperature range |
| High-Level Output Current | -4 mA; VCC=1.65 V |
| High-Level Output Current | -8 mA; VCC=2.3 V |
| High-Level Output Current | -12 mA; VCC=2.7 V |
| High-Level Output Current | -24 mA; VCC=3 V |
| Low-Level Output Current | 4 mA; VCC=1.65 V |
| Low-Level Output Current | 8 mA; VCC=2.3 V |
| Low-Level Output Current | 12 mA; VCC=2.7 V |
| Low-Level Output Current | 24 mA; VCC=3 V |
| Input Transition Rise or Fall Rate | 10 ns/V max; Recommended operating conditions |
| High-Level Output Voltage | VCC-0.2 V min; IOH=-100 µA, VCC=1.65 V to 3.6 V |
| High-Level Output Voltage | 1.29 V typ, 1.2 V min (-40°C to 85°C), 1.1 V min (-40°C to 125°C); IOH=-4 mA, VCC=1.65 V |
| High-Level Output Voltage | 1.9 V typ, 1.7 V min (-40°C to 85°C), 1.6 V min (-40°C to 125°C); IOH=-8 mA, VCC=2.3 V |
| High-Level Output Voltage | 2.2 V typ, 2.2 V min (-40°C to 85°C), 2.1 V min (-40°C to 125°C); IOH=-12 mA, VCC=2.7 V |
| High-Level Output Voltage | 2.4 V typ, 2.4 V min (-40°C to 85°C), 2.3 V min (-40°C to 125°C); IOH=-12 mA, VCC=3 V |
| High-Level Output Voltage | 2.3 V typ, 2.2 V min (-40°C to 85°C), 2.1 V min (-40°C to 125°C); IOH=-24 mA, VCC=3 V |
| Low-Level Output Voltage | 0.1 V typ, 0.2 V max; IOL=100 µA, VCC=1.65 V to 3.6 V |
| Low-Level Output Voltage | 0.24 V typ, 0.45 V max (-40°C to 85°C), 0.60 V max (-40°C to 125°C); IOL=4 mA, VCC=1.65 V |
| Low-Level Output Voltage | 0.3 V typ, 0.7 V max (-40°C to 85°C), 0.75 V max (-40°C to 125°C); IOL=8 mA, VCC=2.3 V |
| Low-Level Output Voltage | 0.4 V typ, 0.4 V max (-40°C to 85°C), 0.6 V max (-40°C to 125°C); IOL=12 mA, VCC=2.7 V |
| Low-Level Output Voltage | 0.55 V typ, 0.55 V max (-40°C to 85°C), 0.75 V max (-40°C to 125°C); IOL=24 mA, VCC=3 V |
| Control Input Leakage Current | ±1 µA typ, ±5 µA max (-40°C to 85°C), ±10 µA max (-40°C to 125°C); VI=0 to 5.5 V, VCC=3.6 V |
| Power-Off Leakage Current | ±1 µA typ, ±10 µA max (-40°C to 85°C), ±20 µA max (-40°C to 125°C); VI or VO=5.5 V, VCC=0 V |
| High-Impedance Output Leakage Current | ±1 µA typ, ±10 µA max (-40°C to 85°C), ±20 µA max (-40°C to 125°C); VO=0 to 5.5 V, VCC=3.6 V |
| Supply Current | 1 µA typ, 10 µA max (-40°C to 85°C), 30 µA max (-40°C to 125°C); VI=VCC or GND, IO=0, VCC=3.6 V |
| Supply Current Disabled State | 1 µA typ, 10 µA max (-40°C to 85°C), 30 µA max (-40°C to 125°C); 3.6 V <= VI <= 5.5 V, IO=0, disabled state only |
| Delta Supply Current | 500 µA typ, 500 µA max (-40°C to 85°C), 5000 µA max (-40°C to 125°C); One input at VCC-0.6 V, other inputs at VCC or GND, VCC=2.7 V to 3.6 V |
| Control Input Capacitance | 4 pF typ; VI=VCC or GND, VCC=3.3 V |
| A or B Port Capacitance | 5.5 pF typ; VI=VCC or GND, VCC=3.3 V |
| Propagation Delay | 1 ns min, 6 ns typ, 12.2 ns max at TA=25°C; 12.7 ns max to 85°C; 13.7 ns max to 125°C; A or B to B or A, VCC=1.8 V ±0.15 V |
| Propagation Delay | 1 ns min, 3.9 ns typ, 7.8 ns max at TA=25°C; 8.3 ns max to 85°C; 9.1 ns max to 125°C; A or B to B or A, VCC=2.5 V ±0.2 V |
| Propagation Delay | 1 ns min, 4.2 ns typ, 7.1 ns max at TA=25°C; 7.3 ns max to 85°C; 8.3 ns max to 125°C; A or B to B or A, VCC=2.7 V |
| Propagation Delay | 1.5 ns min, 3.8 ns typ, 6.1 ns max at TA=25°C; 6.3 ns max to 85°C; 7.3 ns max to 125°C; A or B to B or A, VCC=3.3 V ±0.3 V |
| Output Enable Time | 1 ns min, 4.4 ns typ, 8.3 ns max at TA=25°C; 8.5 ns max to 85°C; 10 ns max to 125°C; OE to A or B, VCC=3.3 V ±0.3 V |
| Output Disable Time | 1.7 ns min, 4.1 ns typ, 7.3 ns max at TA=25°C; 7.5 ns max to 85°C; 8.5 ns max to 125°C; OE to A or B, VCC=3.3 V ±0.3 V |
| Output Skew | 1 ns min, 1.5 ns max; VCC=3.3 V ±0.3 V |
| Power Dissipation Capacitance Per Transceiver | 42 pF typ; Outputs enabled, f=10 MHz, VCC=1.8 V, TA=25°C |
| Power Dissipation Capacitance Per Transceiver | 43 pF typ; Outputs enabled, f=10 MHz, VCC=2.5 V, TA=25°C |
| Power Dissipation Capacitance Per Transceiver | 45 pF typ; Outputs enabled, f=10 MHz, VCC=3.3 V, TA=25°C |
| Power Dissipation Capacitance Per Transceiver | 1 pF typ; Outputs disabled, f=10 MHz, VCC=1.8 V, TA=25°C |
| Power Dissipation Capacitance Per Transceiver | 1 pF typ; Outputs disabled, f=10 MHz, VCC=2.5 V, TA=25°C |
| Power Dissipation Capacitance Per Transceiver | 2 pF typ; Outputs disabled, f=10 MHz, VCC=3.3 V, TA=25°C |
| Datasheet Status | request_only |
Product Overview
SN74LVC245APWR is a Texas Instruments octal bus transceiver for bidirectional signal movement between A and B ports. The device provides 3-state outputs, DIR-controlled transfer direction, and an OE output-enable input on pin 19 for the PW package.
The operating VCC range is 1.65 V to 3.6 V, with recommended input voltage from 0 V to 5.5 V and output voltage from 0 V to VCC. It supports mixed-mode signal operation on all ports for 5-V input/output voltage with 3.3-V VCC, and it includes Ioff support for live insertion, partial-power-down mode, and back-drive protection.
The SN74LVC245APWR package is a 20-pin TSSOP (PW) with a 6.50 mm x 4.40 mm body. Timing specifications include propagation delay down to 3.8 ns typical at 3.3 V ±0.3 V, with 6.3 ns maximum to 85°C. Electrical limits include ±50 mA continuous output current, ±100 mA continuous VCC or GND current, and storage temperature from -65°C to 150°C.
Key Features
- Octal bus transceiver with 3-state outputs
- 1.65 V to 3.6 V operating VCC range
- Inputs accept voltages up to 5.5 V
- 6.3 ns maximum delay at 3.3 V to 85°C
- DIR high selects A-to-B data direction
- DIR low selects B-to-A data direction
- OE output-enable input on PW package pin 19
- Ioff supports live insertion and partial-power-down operation
- Mixed-mode operation supports 5-V signals at 3.3-V VCC
- 2000 V HBM and 1000 V CDM ESD protection
- 20-pin TSSOP package with 6.50 mm x 4.40 mm body
- Output skew specified at 1 ns minimum, 1.5 ns maximum
Typical Applications
- Bidirectional digital bus interfaces
- 3-state signal bus isolation
- Mixed-voltage 5-V and 3.3-V ports
- Live-insertion signal paths
- Partial-power-down system interfaces
- Back-drive protected logic connections
- DIR-controlled A-to-B or B-to-A transfer
- Low-voltage signal chain routing
Procurement Notes
When requesting a quote for SN74LVC245APWR, 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 type of device is the SN74LVC245APWR?
SN74LVC245APWR is an octal bus transceiver from Texas Instruments. It provides 3-state outputs and supports bidirectional transfer between A and B ports using the DIR input for direction control.
What supply voltage range does SN74LVC245APWR support?
The recommended operating supply voltage range is 1.65 V to 3.6 V. The extracted facts also specify a 1.5 V data-retention supply voltage for data retention only.
How is data direction controlled on this transceiver?
The DIR input controls transfer direction. A high DIR level selects A-to-B transfer, while a low DIR level selects B-to-A transfer. The OE input is the output-enable pin and is pin 19 on the PW package.
What package is used for SN74LVC245APWR?
SN74LVC245APWR uses the PW TSSOP package with 20 pins. The package body dimensions are listed as 6.50 mm x 4.40 mm in the extracted facts.
Does SN74LVC245APWR support mixed-mode signal operation?
Yes. Mixed-mode signal operation is supported on all ports under the specified condition of 5-V input/output voltage with a 3.3-V VCC supply.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 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.