74LS244 データシート – Buffer/Line Driver, Receiver – Fairchild

部品番号 : 74LS244, DM74LS244N

特長 : Octal 3-STATE Buffer/Line Driver/Line Receiver

部品情報 :

74LS244, DM74LS244N buffers/line drivers are designed to improve both the performance and PC board density of 3-STATE buffers/drivers employed as memory-address drivers, clock drivers, and bus-oriented ransmitters/receivers. ( 74LS244 datasheet )

Featuring 400mV of hysteresis at each low current PNP data line input, they provide improved noise rejection and high fanout outputs and can be used to drive terminated lines down to 133W.
74LS244 データシート, 74LS244 pinout

1.  3-STATE outputs drive bus lines directly
2.  PNP inputs reduce DC loading on bus lines
3.  Hysteresis at data inputs improves noise margins
4.  Typical IOL (sink current) 24 mA
5.  Typical IOH (source current)  -15 mA
6. Typical propagation delay times
– Inverting 10.5 ns
– Noninverting 12 ns
7. Typical enable/disable time 18 ns
8. Typical power dissipation (enabled)
Inverting 130 mW
Noninverting 135 mW

部品番号 : DM74LS244WM, DM74LS244SJ, DM74LS244N

74LS244 データシート PDF

Datasheet : Download