Philips 74LV245PW, 74LV245N, 74LV245DB, 74LV245D Datasheet

INTEGRATED CIRCUITS

74LV245

Octal bus transceiver (3-State)

Product specification

1998 Apr 20

Supersedes data of 1997 Feb 19

IC24 Data Handbook

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Philips Semiconductors	Product specification
Octal bus transceiver (3-State)	74LV245

FEATURES

•Wide operating voltage: 1.0 to 5.5 V

•Optimized for low voltage applications: 1.0 to 3.6 V

•Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V

•Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V,

Tamb = 25°C

•Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, Tamb = 25°C

•Output capability: bus driver

•ICC category: MSI

DESCRIPTION

The 74LV245 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT245.

The 74LV245 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both send and receive directions. The

74LV245 features an output enable (OE) input for easy cascading and a send/receive (DIR) input for direction control. OE controls the outputs so that the buses are effectively isolated.

QUICK REFERENCE DATA

GND = 0 V; Tamb = 25°C; tr = tf ≤ 2.5 ns

	SYMBOL	PARAMETER	CONDITIONS	TYPICAL	UNIT
	tPHL/tPLH	Propagation delay	CL = 15 pF;	7.0	ns
		An to Bn; Bn to An	VCC = 3.3 V
	CI	Input capacitance		3.5	pF
	CI/O	Input/output capacitance		10	pF
	CPD	Power dissipation capacitance per buffer	VCC = 3.3 V	40	pF
			VI = GND to VCC, note 1

NOTE:

1.CPD is used to determine the dynamic power dissipation (PD in μW) PD = CPD VCC2 fi (CL VCC2 fo) where:

fi = input frequency in MHz; CL = output load capacitance in pF;

fo = output frequency in MHz; VCC = supply voltage in V;(CL VCC2 fo) = sum of the outputs.

ORDERING INFORMATION

PACKAGES	TEMPERATURE RANGE	OUTSIDE NORTH AMERICA	NORTH AMERICA	PKG. DWG. #
20-Pin Plastic DIL	±40°C to +125°C	74LV245 N	74LV245 N	SOT146-1
20-Pin Plastic SO	±40°C to +125°C	74LV245 D	74LV245 D	SOT163-1
20-Pin Plastic SSOP Type II	±40°C to +125°C	74LV245 DB	74LV245 DB	SOT339-1
20-Pin Plastic TSSOP Type I	±40°C to +125°C	74LV245 PW	74LV245PW DH	SOT360-1

PIN DESCRIPTION

PIN NUMBER		SYMBOL		FUNCTION
1		DIR		Direction
2, 3, 4, 5,		A0 to A7		Data inputs/outputs
6, 7, 8, 9
10		GND		Ground (0 V)
18, 17, 16, 15,		B0 to B7		Data inputs/outputs
14, 13, 12, 11
19				Output enable input (active LOW)
		OE
20		VCC		Positive supply voltage

FUNCTION TABLE

				INPUTS			INPUTS/OUTPUT
						DIR	An	Bn
			OE
			L			L	A = B	Inputs
			L			H	Inputs	B = A
			H			X	Z	Z
NOTES:
H	=		HIGH voltage level
L	=		LOW voltage level
X	=		don't care
Z	=		high impedance OFF-state

1998 Apr 20

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853±1931 19258

Philips Semiconductors	Product specification
Octal bus transceiver (3-State)	74LV245

PIN CONFIGURATION

LOGIC SYMBOL

				1	DIR
DIR	1	20	VCC
					OE
						19
A0	2	19	OE
A1	3	18	B0	2	A0
					B0
A2	4	17	B1			18
					A1
A3	5	16	B2	3
					B1
						17
A4	6	15	B3
					A2
				4
A5	7	14	B4		B2
						16
A6	8	13	B5	5	A3
					B3
A7	9	12	B6			15
GND	10	11	B7	6	A4
					B4
						14
		SV00624		7	A5
					B5
						13
LOGIC SYMBOL (IEEE/IEC)				8	A6
					B6
						12
19
	G3				A7
1				9
					B7
	3EN1
						11
	3EN2					SV00625

	1
2	18
	2
3	17
4	16
5	15
6	14
7	13
8	12
9	11
	SV00626

1998 Apr 20

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Philips Semiconductors	Product specification
Octal bus transceiver (3-State)	74LV245

RECOMMENDED OPERATING CONDITIONS

SYMBOL	PARAMETER	CONDITIONS	MIN	TYP.	MAX	UNIT
VCC	DC supply voltage	See Note 1	1.0	3.3	5.5	V
VI	Input voltage		0	±	VCC	V
VO	Output voltage		0	±	VCC	V
Tamb	Operating ambient temperature range in free air	See DC and AC	±40		+85	°C
		characteristics	±40		+125
		VCC = 1.0V to 2.0V	±	±	500
tr, tf	Input rise and fall times	VCC = 2.0V to 2.7V	±	±	200	ns/V
		VCC = 2.7V to 3.6V	±	±	100
		VCC = 3.6V to 5.5V	±	±	50

NOTE:

1.The LV is guaranteed to function down to VCC = 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to VCC = 5.5V.

ABSOLUTE MAXIMUM RATINGS1, 2

In accordance with the Absolute Maximum Rating System (IEC 134).

Voltages are referenced to GND (ground = 0V).

	SYMBOL	PARAMETER	CONDITIONS	RATING	UNIT
	VCC	DC supply voltage		±0.5 to +7.0	V
	"IIK	DC input diode current	VI < ±0.5 or VI > VCC + 0.5V	20	mA
	"IOK	DC output diode current	VO < ±0.5 or VO > VCC + 0.5V	50	mA
	"IO	DC output source or sink current	±0.5V < VO < VCC + 0.5V		mA
		± bus driver outputs		35
	"IGND,	DC VCC or GND current for types with			mA
		± bus driver outputs		70
	"ICC
	Tstg	Storage temperature range		±65 to +150	°C
		Power dissipation per package	for temperature range: ±40 to +125°C
	PTOT	± plastic DIL	above +70°C derate linearly with 12 mW/K	750	mW
		± plastic mini-pack (SO)	above +70°C derate linearly with 8 mW/K	500
		± plastic shrink mini-pack (SSOP and TSSOP)	above +60°C derate linearly with 5.5 mW/K	400

NOTES:

1.Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under ªrecommended operating conditionsº is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

2.The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

1998 Apr 20

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