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| Technology family | HC（T) |
| Supply voltage (min) (V) | 2 |
| Supply voltage (max) (V) | 6 |
| Number of channels | 8 |
| IOL (max) (mA) | 7.8 |
| Supply current (max) (µA) | 80 |
| IOH (max) (mA) | -7.8 |
| Input type | Standard CMOS |
| Output type | 3-State |
| Features | Balanced outputs, Input clamp diode, Very high speed (tpd 5-10ns) |
| Rating | Automotive, Catalog |
| Operating temperature range (°C) | -40 ~ 125 |
| EM74HC244D;EM74HCT244D | SOP-20L | plastic small outline package; 20 leads; body width 7.5 mm |
| EM74HC244PW;EM74HCT244PW | TSSOP-20L | plastic thin shrink small outline package; 20 leads; body width 4.4 mm |
- Wide supply voltage range from 2.0 V to 6.0 V
- High noise immunity
- CMOS low power dissipation
- Latch-up performance exceeds 250 mA
- Octal bus interface
- Non-inverting 3-state outputs
- Complies with JEDEC standards:
- JESD8C (2.7 V to 3.6 V)
- JESD7A (2.0 V to 6.0 V)
- Input levels:
- For EM74HC244: CMOS level
- For EM74HCT244: TTL level
- ESD protection:
- HBM ANSI/ESDA/JEDEC JS-001 Class 3A exceeds 6000 V
- CDM ANSI/ESDA/JEDEC JS-002 Class C3 exceeds 2000 V
- Multiple package options
The EM74HC244; EM74HCT244 are 8-bit buffer/line drivers with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.