ST 74VCXHR162245TTR User Manual

74VCXHR162245

LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER (3-STATE) WITH 3.6V TOLERANT INPUTS AND OUTPUTS

■3.6V TOLERANT INPUTS AND OUTPUTS

■HIGH SPEED IN BOTH A, B OUTPUTS :

tPD = 3.4 ns (MAX.) at VCC = 3.0 to 3.6V tPD = 4.3 ns (MAX.) at VCC = 2.3 to 2.7V

■SYMMETRICAL IMPEDANCE OUTPUTS:

|IOH| = IOL = 12mA (MIN) at VCC = 3.0V |IOH| = IOL = 8mA (MIN) at VCC = 2.3V

■POWER DOWN PROTECTION ON INPUTS AND OUTPUTS

■26Ω SERIE RESISTORS IN BOTH A AND B PORT OUTPUTS

■OPERATING VOLTAGE RANGE: VCC(OPR) = 2.3V to 3.6V

■PIN AND FUNCTION COMPATIBLE WITH 74 SERIES HR162245

■BUS HOLD PROVIDED ON BOTH SIDES

■LATCH-UP PERFORMANCE EXCEEDS 300mA (JESD 17)

■ESD PERFORMANCE:

HBM > 2000V (MIL STD 883 method 3015); MM > 200V

DESCRIPTION

The 74VCXHR162245 is a low voltage CMOS 16 BIT BUS TRANSCEIVER (3-STATE) fabricated with sub-micron silicon gate and five-layer metal wiring C2MOS technology. It is ideal for low power and very high speed 2.3 to 3.6V applications; it can be interfaced to 3.6V signal environment for both inputs and outputs.

This IC is intended for two-way asynchronous communication between data buses; the direction of data transmission is determined by DIR input. The two enable inputs nG can be used to disable the device so that the buses are effectively isolated. The device circuits is including 26Ω series resistance in the A and B port outputs. These resistors permit to reduce line noise in high speed applications. Bus hold on data inputs is provided in order to eliminate the need for external pull-up or pull-down resistor.

All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. All floating bus terminals during High Z State must be held HIGH or LOW.

TSSOP

ORDER CODES

PACKAGE	TUBE	T & R
TSSOP		74VCXHR162245TTR

PIN CONNECTION

September 2001

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74VCXHR162245

INPUT AND OUTPUT EQUIVALENT CIRCUIT

	PIN DESCRIPTION			IEC LOGIC SYMBOLS
	PIN No		SYMBOL	NAME AND FUNCTION
		1	1DIR	Directional Control
	2, 3, 5, 6, 8, 9,		1B1 to 1B8	Data Inputs/Outputs
	11, 12
	13, 14, 16, 17,		2B1 to 2B8	Data Inputs/Outputs
	19, 20, 22, 23
		24	2DIR	Directional Control
		25	2G	Output Enable Input
	36, 35, 33, 32,		2A1 to 2A8	Data Inputs/Outputs
	30, 29, 27, 26
	47, 46, 44, 43,		1A1 to 1A8	Data Inputs/Outputs
	41, 40, 38, 38
		48	1G	Output Enable Input
	4, 10,	15, 21,	GND	Ground (0V)
	28, 34, 39, 45
	7, 18, 31, 42		VCC	Positive Supply Voltage

TRUTH TABLE

	INPUTS	FUNCTION		OUTPUT
G	DIR	A BUS	B BUS	Yn
L	L	OUTPUT	INPUT	A = B
L	H	INPUT	OUTPUT	B = A
H	X	Z	Z	Z

X : Don`t Care

Z : High Impedance

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74VCXHR162245

ABSOLUTE MAXIMUM RATINGS

Symbol		Parameter	Value	Unit
VCC		Supply Voltage	-0.5 to +4.6	V
VI		DC Input Voltage	-0.5 to +4.6	V
VO		DC Output Voltage (OFF State)	-0.5 to +4.6	V
VO		DC Output Voltage (High or Low State) (note 1)	-0.5 to VCC + 0.5	V
IIK		DC Input Diode Current	- 50	mA
IOK		DC Output Diode Current (note 2)	- 50	mA
IO		DC Output Current	± 50	mA
ICC or IGND		DC VCC or Ground Current per Supply Pin	± 100	mA
PD		Power Dissipation	400	mW
Tstg		Storage Temperature	-65 to +150	°C
T	L	Lead Temperature (10 sec)	300	°
				C

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied

1)IO absolute maximum rating must be observed

2)VO < GND, VO > VCC

RECOMMENDED OPERATING CONDITIONS

Symbol	Parameter		Value	Unit
VCC	Supply Voltage		2.3 to 3.6	V
VI	Input Voltage		-0.3 to 3.6	V
VO	Output Voltage (OFF State)		0 to 3.6	V
VO	Output Voltage (High or Low State)		0 to VCC	V
IOH, IOL	High or Low Level Output Current	(VCC = 3.0 to 3.6V)	± 12	mA
IOH, IOL	High or Low Level Output Current	(VCC = 2.3 to 2.7V)	± 8	mA
Top	Operating Temperature		-55 to 125	°C
dt/dv	Input Rise and Fall Time (note 1)		0 to 10	ns/V

1) VIN from 0.8V to 2V at VCC = 3.0V

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