Motorola SN54LS797J, SN54LS798J, SN54LS795J, SN54LS796J, SN74LS795DW Datasheet

TRI-STATE OCTAL BUFFERS

The SN54 /74LS795 thru SN54 /74LS798 device types provide a second source for the 71/81LS95 thru 71/81LS98 series. These devices are octal low power Schottky versions of the 70/8095 thru 70/8098 3-STATE Hex Buffers. The LS795 and LS797 are noninverting and the LS796 and LS798 are inverting functions. On each buffer, one of the two inputs is used as a control line to gate the output into the high impedance state, while the other input passes the data through the buffer. On the LS795 and LS796 access is through a 2-input NOR gate, with all eight 3-STATE enable lines common. On the LS797 and LS798, four buffers are enabled from one common line and the other four buffers from another common line. On all device types the 3-STATE condition is achieved by applying a high logic level to the enable pins.

TRUTH TABLES

LS795

		INPUTS				OUTPUT
G1			G2		A	Y
	H		X		X	Z
	X		H		X	Z
	L		L		H	H
	L		L		L	L

LS797

INPUTS			OUTPUT
		A	Y
	G
	H	X	Z
	L	H	H
	L	L	L

LS796

INPUTS OUTPUT

G1	G2	A	Y
H	X	X	Z
X	H	X	Z
L	L	H	L
L	L	L	H

LS798

INPUTS OUTPUT

G A Y

H X Z

L H L

L L H

GUARANTEED OPERATING RANGES

SN54/74LS795

SN54/74LS796

SN54/74LS797

SN54/74LS798

TRI-STATE OCTAL BUFFERS

LOW POWER SCHOTTKY

		J SUFFIX
		CERAMIC
	20	CASE 732-03
	1
		N SUFFIX
		PLASTIC
	20	CASE 738-03
	1
		DW SUFFIX
	20	SOIC
		CASE 751D-03
		1

ORDERING INFORMATION

SN54LSXXXJ Ceramic

SN74LSXXXN Plastic

SN74LSXXXDW SOIC

Symbol	Parameter		Min	Typ	Max	Unit
VCC	Supply Voltage	54	4.5	5.0	5.5	V
		74	4.75	5.0	5.25
TA	Operating Ambient Temperature Range	54	± 55	25	125	°C
		74	0	25	70
IOH	Output Current Ð High	54			± 2.6	mA
		74			± 5.0
IOL	Output Current Ð Low	54			8.0	mA
		74			16

FAST AND LS TTL DATA

5-609

SN54/74LS795 •SN54/74LS796 SN54/74LS797 •SN54/74LS798

LOGIC DIAGRAMS

VCC G2		A8	Y8	A7	Y7	A6	Y6	A5	Y5
20	19	18	17	16	15	14	13	12	11
1	2	3	4	5	6	7	8	9	10
G1	A1	Y1	A2	Y2	A3	Y3	A4	Y4	GND
			SN54/74LS795
VCC G2		A8	Y8	A7	Y7	A6	Y6	A5	Y5
20	19	18	17	16	15	14	13	12	11

1	2	3	4	5	6	7	8	9	10
G1	A1	Y1	A2	Y2	A3	Y3	A4	Y4	GND
			SN54/74LS797

VCC G2		A8	Y8	A7	Y7	A6	Y6	A5	Y5
20	19	18	17	16	15	14	13	12	11
1	2	3	4	5	6	7	8	9	10
G1	A1	Y1	A2	Y2	A3	Y3	A4	Y4	GND
			SN54/74LS796
VCC G2		A8	Y8	A7	Y7	A6	Y6	A5	Y5
20	19	18	17	16	15	14	13	12	11

1	2	3	4	5	6	7	8	9	10
G1	A1	Y1	A2	Y2	A3	Y3	A4	Y4	GND
			SN54/74LS798

FAST AND LS TTL DATA

5-610