The 74LVC244A is a low voltage CMOS OCTAL BUS BUFFER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for 1.65 to 3.6 VCC operations and low power and low noise applications. It can be interfaced to 5V signal environment for inputs in mixed 3.3/5V system. G control output governs four BUS BUFFERs. This device is designed to be used with 3 state memory address drivers, etc. It has more speed performance at 3.3V than 5V AC/ACT family, combined with a lower power consumption. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.
This datasheet covers the STMicroelectronics 74LVC244A, a low voltage CMOS octal bus buffer with 3-state outputs, fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. The document states that the device is intended for 1.65 to 3.6 V VCC operation and low power, low noise applications, and that its inputs can be interfaced to a 5V signal environment in mixed 3.3/5V systems. A G control output governs four bus buffers, and all inputs and outputs have protection circuits against static discharge.
The datasheet gives the pin connection and IEC logic symbols, pin description and truth table, absolute maximum ratings, recommended operating conditions, DC specifications, dynamic switching characteristics, AC electrical characteristics and capacitive characteristics, together with test circuits and waveforms. It also lists order codes for SOP and TSSOP packages, the mechanical data and tape and reel dimensions for SO-20 and TSSOP20, and a revision history.
| Operating Voltage Range | VCC(OPR) = 1.65 V to 3.6 V (1.2 V data retention) |
|---|---|
| Propagation Delay | tPD = 5.9 ns (max.) at VCC = 3 V |
| Output Current | |IOH| = IOL = 24 mA (min) at VCC = 3 V |
| Input Voltage | 0 to 5.5 V |
| ESD Performance | HBM > 2000 V; MM > 200 V |
| Latch-up Performance | Exceeds 500 mA (JESD 17) |
| Operating Temperature | -55 to 125 °C |
| Packages | SOP (74LVC244AMTR) and TSSOP (74LVC244ATTR) |
The recommended operating supply voltage is 1.65 V to 3.6 V, with 1.2 V data retention.
Yes. The datasheet states the device can be interfaced to a 5V signal environment for inputs in mixed 3.3/5V systems.
It is offered in SOP as 74LVC244AMTR and in TSSOP as 74LVC244ATTR.
The maximum propagation delay time is 5.9 ns at VCC = 3 V.