Philips 74ABTH16952DL, 74ABTH16952DGG, 74ABT16952DL, 74ABT16952DGG Datasheet

INTEGRATED CIRCUITS

74ABT16952

74ABTH16952

16-bit registered transceiver (3-State)

Product specification

1998 Feb 25

Supersedes data of 1995 Sep 28

IC23 Data Handbook

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	Philips Semiconductors	Product specification
	16-bit registered transceiver (3-State)	74ABT16952
		74ABTH16952

FEATURES

•Two 8-bit registered transceivers

•Live insertion/extraction permitted

•Power-up 3-State

•74ABTH16952 incorporates bus-hold data inputs which eliminate the need for external pull-up resistors to hold unused inputs

•Power-up reset

•Multiple VCC and GND pins minimize switching noise

•Independent registers for A and B buses

•Output capability: +64mA/±32mA

•Latch-up protection exceeds 500mA per Jedec Std 17

•ESD protection exceeds 2000V per MIL STD 883 Method 3015 and 200V per Machine Model

•Bus-hold data inputs eliminate the need for external pull-up resistors to hold unused inputs

QUICK REFERENCE DATA

DESCRIPTION

The 74ABT16952 high-performance BiCMOS device combines low static and dynamic power dissipation with high speed and high output drive.

The 74ABT16952 is a dual octal registered transceiver. Two 8-bit registers store data flowing in both directions between two bidirectional buses. Data applied to the inputs is entered and stored on the rising edge of the Clock (nCPXX) provided that the Clock Enable (nCEXX) is Low. The data is then present at the 3-State output buffers, but is only accessible when the Output Enable (nOEXX) is Low. Data flow from A inputs to B outputs is the same as for B inputs to A outputs.

Two options are available, 74ABT16952 which does not have the bus-hold feature and 74ABTH16952 which incorporates the bus-hold feature.

	SYMBOL	PARAMETER	CONDITIONS	TYPICAL	UNIT
			Tamb = 25°C; GND = 0V
	tPLH	Propagation delay		2.8
		nCPBA to nAx or	CL = 50pF; VCC = 5V		ns
	tPHL			2.3
		nCPAB to nBx
	CIN	Input capacitance	VI = 0V or VCC	4	pF
	CI/O	I/O capacitance	VO = 0V or VCC; 3-State	7	pF
	ICCZ	Quiescent supply current	Outputs disabled; VCC = 5.5V	500	μA
	ICCL		Outputs LOW; VCC = 5.5V	8	mA

ORDERING INFORMATION

PACKAGES	TEMPERATURE RANGE	OUTSIDE NORTH AMERICA	NORTH AMERICA	DWG NUMBER
56-Pin Plastic SSOP Type III	±40°C to +85°C	74ABT16952 DL	BT16952 DL	SOT371-1
56-Pin Plastic TSSOP Type II	±40°C to +85°C	74ABT16952 DGG	BT16952 DGG	SOT364-1
56-Pin Plastic SSOP Type III	±40°C to +85°C	74ABTH16952 DL	BH16952 DL	SOT371-1
56-Pin Plastic TSSOP Type II	±40°C to +85°C	74ABTH16952 DGG	BH16952 DGG	SOT364-1

PIN DESCRIPTION

	PIN NUMBER			SYMBOL						NAME AND FUNCTION
	2, 55	1CPAB / 1CPBA								Clock input A to B / Clock input B to A
	18, 22	2CPAB / 2CPBA
	3, 54,				/
				1CEAB			1CEBA			Clock enable input A to B / Clock enable input B to A
	26, 31	2CEAB / 2CEBA
	52, 51, 49, 48, 47, 45, 44, 43			1A0 ± 1A7						Data inputs/outputs (A side)
	42, 41, 40, 38, 37, 36, 34, 33			2A0 ± 2A7
	1, 56			1B0 ± 1B7						Data inputs/outputs (B side)
	8, 29			2B0 ± 2B7
						/
	4, 11, 18, 25, 32, 39, 45, 53		1OEAB				1OEBA			Output enable inputs
		2OEAB / 2OEBA
	4, 17, 30, 43			GND						Ground (0V)
	7, 22, 35, 50			VCC						Positive supply voltage

1998 Feb 25

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853-1814 19018

Philips Semiconductors	Product specification

16-bit registered transceiver (3-State)

74ABT16952

74ABTH16952

PIN CONFIGURATION																						LOGIC SYMBOL
	1OEAB										1					56		1OEBA
1CPAB																	1CPBA
											2					55
			1CEAB								3					54		1CEBA
				GND													GND
											4					53								5		6		8		9		10		12		13		14
				1A0													1B0
											5					52
				1A1													1B1
											6					51								1A0		1A1		1A2		1A3		1A4		1A5		1A6		1A7
				VCC							7					50	VCC					2		1CPAB
				1A2							8					49	1B2					3		1CEAB													1OEBA				56
				1A3													1B3					55		1CPBA													1OEAB				1
											9					48
				1A4													1B4					54		1CEBA
											10					47
				GND													GND							1B0		1B1		1B2		1B3		1B4		1B5		1B6		1B7
											11			46
				1A5													1B5
											12					45
				1A6													1B6
											13					44								52		51		49		48		47		45		44		43
				1A7													1B7
											14				43
				2A0													2B0
											15					42
																								15		16		17		19		20		21		23		24
				2A1							16					41	2B1
				2A2													2B2
											17				40
				GND							18				39		GND							2A0 2A1 2A2 2A3 2A4 2A5												2A6		2A7
				2A3													2B3					27		2CPAB
											19			38								26		2CEAB													2OEBA				29
				2A4													2B4
											20					37						30		2CPBA													2OEAB				28
				2A5							21					36	2B5					31		2CEBA
				VCC							22					35	VCC							2B0		2B1		2B2		2B3		2B4		2B5		2B6		2B7
				2A6							23					34	2B6
				2A7							24				33		2B7
																								42		41		40		38		37		36		34		33
				GND							25			32			GND
				2CEAB							26					31		2CEBA																						SH00071
2CPAB											27					30	2CPBA
		2OEAB									28				29
																		2OEBA
														SH00070

1998 Feb 25

3

Philips Semiconductors	Product specification

16-bit registered transceiver (3-State)

74ABT16952

74ABTH16952

LOGIC SYMBOL (IEEE/IEC)

1OEBA 56 1CEBA 54

1LPBA 55 1OEAB 1

1LEAB 3 1CPAB 2

2OEBA 29 2CEBA 31

2CPBA 30 2OEAB 28

2LEAB 26 2CPAB 27

1A0 5

1A1 6

1A2 8

1A3 9

1A4 10

1A5 12

1A6 13

1A7 14

2A0 15

2A1 16

2A2 17

2A3 19

2A4 20

2A5 21

2A6 23

2A7 24

1EN3

G1

1C5

EN4

G2

2C6

EN9

G7

7C11

EN10

G8

8C12

3	5D	52	1B0
6D	4
		51	1B1
		49	1B2
		48	1B3
		47	1B4
		45	1B5
		44	1B6
		43	1B7
9	11D	42	2B0
12D	10
		41	2B1
		40	2B2
		38	2B3
		37	2B4
		36	2B5
		34	2B6
		33	2B7
		SH00086

FUNCTION TABLE for Register nAx or nBx

		INPUTS					INTERNAL	OPERATING
	nAx or
			nCPXX	nCEXX			Q	MODE
	nBx
	X		X		H		NC	Hold data
	L		↑		L		L	Load data
	H		↑		L		H
H = High voltage level
L = Low voltage level
↑	= Low-to-High transition
X	= Don't care

XX = AB or BA

NC= No change

FUNCTION TABLE for Output Enable

	INPUTS				INTERNAL	nAx or nBx	OPERATING
					Q	OUTPUTS	MODE
		nOEXX
		H			X	Z	Disable outputs
		L			L	L	Enable outputs
		L			H	H
H	= High voltage level
L	= Low voltage level
X	= Don't care
XX = AB or BA
Z	= High impedance ºoffº state

1998 Feb 25

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