ST 54VCXHR162245 User Manual

54VCXHR162245

Rad hard low voltage CMOS 16-bit bus buffer transceiver (3-state) with 3.6 V tolerant inputs and outputs

Features

■1.65 to 3.6 V inputs and outputs

■High speed in both A, B outputs:

–tPD = 3.4 ns at VCC = 3.0 to 3.6 V

–tPD = 4.3 ns at VCC = 2.3 to 2.7 V

■Symmetrical impedance outputs:

–|IOH| = IOL = 12 mA (Min.) at VCC = 3.0 V

–|IOH| = IOL = 8 mA (Min.) at VCC = 2.3 V

■Power down protection on inputs and outputs

■26 Ω serie resistors in bith A and B port outputs

■Operating voltage range:

–VCC(Opr) = 1.65 V to 3.6 V

■Pin and function compatible with 54 series HR162245

■Bus hold provided on both sides

■Cold spare function

■Latch-up performance exceeds 300 mA (JESD 17)

■ESD performance:

–HBM > 2000 V

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

■300 krad Mil1019.6 condition A, (RHA QML qualification extension undergone)

■No SEL, no SEU and no SET under 110 Mev/cm2/mg LET heavy ions irradiation

■QML qualified product

■Device fully compliant with DSCC SMD 5962-05213

■100 mV typical input hysteresis

Flat-48

The upper metallic lid is not electrically connected to any pins, nor to the IC die inside the package.

Description

The 54VCXHR162245 is a low voltage CMOS 16 bit bus transceiver (3-state) fabricated with submicron silicon gate and five-layer metal wiring C²MOS technology. It is ideal for low power and very high speed 1.65 to 3.6 V applications; it can be interfaced to 3.6 V signal environment for both inputs and outputs. This IC is intended for twoway 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 26 Ω 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 2 kV ESD immunity and transient excess voltage. All floating bus terminals during high Z State must be held HIGH or LOW.

August 2011

Doc ID 10651 Rev 8

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Contents	54VCXHR162245

Contents

1	Logic symbols and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . .		. 3
2	Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		4
	2.1	Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
	2.2	Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
	2.3	Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
3	Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		6
	3.1	Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
4	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
5	Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		11
6	Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		12
7	Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		14
8	Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		16
9	Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		17

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54VCXHR162245	Logic symbols and I/O equivalent circuit

1 Logic symbols and I/O equivalent circuit

Figure 1. IEC logic symbols

Figure 2. Input and output equivalent circuit

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Pin settings	54VCXHR162245

2 Pin settings

2.1Pin connection

Figure 3. Pin connection (top through view)

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54VCXHR162245	Pin settings

2.2Pin description

Table 1.	Pin description
	Pin n°	Symbol			Name and function
	1	1DIR			Directional control
2, 3, 5, 6, 8, 9, 11, 12		1B1 to 1B8			Data inputs/outputs
13, 14, 16, 17, 19, 20, 22, 23		2B1 to 2B8			Data inputs/outputs
	24	2DIR			Directional control
	25				Output enable input
		2G
36, 35, 33, 32, 30, 29, 27, 26		2A1 to 2A8			Data inputs/outputs
47, 46, 44, 43, 41, 40, 38, 38		1A1 to 1A8			Data inputs/outputs
	48				Output enable input
		1G
4, 10, 15, 21, 28, 34, 39, 45		GND			Ground (0 V)
	7, 18, 31, 42	VCC			Positive supply voltage

2.3Truth table

	Table 2.		Truth table
			Inputs				Function		Output
				DIR		A bus		B bus	Yn
		G
		L		L		OUTPUT		INPUT	A = B
		L		H		INPUT		OUTPUT	B = A
		H		X		Z		Z	Z
Note:	X = Do not care; Z = High impedance

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Maximum rating	54VCXHR162245

3 Maximum rating

Stressing the device above the rating listed in the “absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

	Table 3.	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
	V	DC output voltage (high or low state) (1)	-0.5 to V + 0.5	V
	O		CC
	IIK	DC input diode current	- 50	mA
	I	DC output diode current (2)	- 50	mA
	OK
	IO	DC output current	± 50	mA
	ICC or	DC VCC or ground current per supply pin	± 100	mA
	IGND
	PD	Power dissipation	400	mW
	Tstg	Storage temperature	-65 to +150	°C
	TL	Lead temperature (10 sec)	260	°C

1.IO absolute maximum rating must be observed

2.VO < GND, VO > VCC

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