74ALS645A

Features:

•Octal bidirectional bus interface
•3-State buffer outputs sink 24mA and source 15mA
•Outputs are placed in high impedance state during power-off conditions
•The -1 version sinks 48mA I_OL within the +5% V_CC range


Specifications

SYMBOL	PARAMETER		LIMITS			UNIT
			MIN	NOM	MAX
VCC	Supply voltage		4.5	5.0	5.5	V
VIH	High-level input voltage		2.0			V
VIL	Low-level input voltage				0.8	V
IIK	Input clamp current				18	mA
IOH	High-level output current				15	mA
IOL	Low-level output current	All versions			24	mA
		-1 version			481	mA
Tamb	Operating free-air temperature range		0		+70	°C

Description

  The 74ALS645A is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. The device features an output enable (OE ) input for easy cascading and transmit/receive (R/T) input for direction control.

The 74ALS645A-1 is the same as the 74ALS645A except that both ports sink 48mA within the ±5% V_CC range.