Motorola MC74ACT652DWR2, MC74ACT652N, MC74ACT652DW, MC74AC652N, MC74AC652DW Datasheet

Octal Transceiver/Register With

3$State Outputs (Non$Inverting)

The MC74AC/ACT652 consists of registered bus transceiver circuits, with outputs, D-type flip-flops and control circuitry providing multiplexed transmission of data directly from the input bus or from the internal storage registers. Data on the A or B bus will be loaded into the respective registers on the LOW-to-HIGH transition of the appropriate clock pin (CAB or CBA). The four fundamental data handling functions available are illustrated in Figures 1 to 4.

•Independent Registers for A and B Buses

•Multiplexed Real-Time and Stored Data Transfers

•Choice of True and Inverting Data Paths

•3-State Outputs

•300 mil Slim Dual-in-Line Package

•Outputs Source/Sink 24 mA

•′ACT652 Has TTL Compatible Inputs

REAL TIME TRANSFER

A-BUS TO B-BUS

	A-BUS
REG	REG
	B-BUS

REAL TIME TRANSFER

B-BUS TO A-BUS

	A-BUS
REG	REG
	B-BUS

	Figure 1		Figure 2
	STORAGE		TRANSFER
FROM BUS TO REGISTER		FROM REGISTER TO BUS
	A-BUS		A-BUS
REG	REG	REG	REG
	B-BUS		B-BUS
	Figure 3		Figure 4

MC74AC652

MC74ACT652

OCTAL TRANSCEIVER/ REGISTER WITH 3-STATE OUTPUTS (NON-INVERTING)

24

1

N SUFFIX

CASE 724-03

PLASTIC PACKAGE

24

1

DW SUFFIX

CASE 751E-04

SOIC PACKAGE

PIN NAMES

A0 ± A7			Data Register A Inputs
			Data Register A Outputs
B0 ± B7			Data Register B Inputs
CAB, CBA			Data Register B Outputs
			Clock Pulse Inputs
SAB,	SBA		Transmit/Receive Inputs
GAB, GBA			Output Enable Inputs

MAXIMUM RATINGS*

Symbol	Parameter	Value	Unit
VCC	DC Supply Voltage (Referenced to GND)	±0.5 to +7.0	V
Vin	DC Input Voltage (Referenced to GND)	±0.5 to VCC + 0.5	V
Vout	DC Output Voltage (Referenced to GND)	±0.5 to VCC + 0.5	V
Iin	DC Input Current, per Pin	± 20	mA
Iout	DC Output Sink/Source Current, per Pin	± 50	mA
ICC	DC VCC or GND Current per Output Pin	± 50	mA
Tstg	Storage Temperature	±65 to +150	°C

*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions.

FACT DATA

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MC74AC652 MC74ACT652

Pinout: 24-Lead Plastic Package (Top View)

VCC			CBA		SBA	GBA			B0		B1		B2		B3		B4		B5		B6		B7
	24		23		22		21		20		19		18		17		16		15		14		13

	1		2		3		4		5		6		7		8		9		10		11		12
	CAB		SAB	GAB			A0		A1		A2		A3		A4		A5		A6		A7	GND

LOGIC SYMBOL

CAB

B0

B1

B2

B3

B4

B5

B6

B7

SAB

GAB

CBA

SBA

GBA

A0

A1

A2

A3

A4

A5

A6

A7

LOGIC DIAGRAM
GBA	GAB
CBA
SBA
CAB
SAB
1 OF 8 CHANNELS	D0
	C0
A0	B0
D0
C0

TO 7 OTHER CHANNELS

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.

FACT DATA

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MC74AC652 MC74ACT652

FUNCTION TABLE

				Inputs					Data I/O*		Operation or Function
GAB	GBA			CAB	CBA	SAB	SBA		A0 ± A7	B0 ± B7
L		H		H or L	H or L	X	X		Input	Input	Isolation
L		H				X	X				Store A and B Data
X		H			H or L	X	X		Input	Unspecified*	Store A, Hold B
H		H				X**	X		Input	Output	Store A in Both Registers
L		X		H or L		X	X	Unspecified*		Input	Hold A, Store B
L		L				X	X**		Output	Input	Store B in Both Registers
L		L		X	X	X	L		Output	Input	Real-Time B Data to A Bus
L		L		X	H or L	X	H				Stored B Data to A Bus
H		H		X	X	L	X		Input	Output	Real-Time A Data to B Bus
H		H		H or L	X	H	X				Stored A Data to B Bus
H		L		H or L	H or L	H	H		Output	Output	Stored A Data to B Bus and
											Stored B Data to A Bus

*The data output functions may be enabled or disabled by various signals at the GBA and GAB inputs. Data input functions are always enabled; i.e., data at the bus pins will be stored on every LOW-to-HIGH transition of the appropriate clock inputs.

**Select control = L: clocks can occur simultaneously.

H = HIGH Voltage Level; L = LOW Voltage Level; X = Immaterial; = LOW-to-HIGH Transition

RECOMMENDED OPERATING CONDITIONS

	Symbol	Parameter		Min	Typ	Min	Unit
	VCC	Supply Voltage	′AC	2.0	5.0	6.0	V
			′ACT	4.5	5.0	5.5
	Vin, Vout	DC Input Voltage, Output Voltage (Ref. to GND)		0		VCC	V
		Input Rise and Fall Time (Note 1)	VCC @ 3.0 V		150
	tr, tf		VCC @ 4.5 V		40		ns/V
		′AC Devices except Schmitt Inputs
			VCC @ 5.5 V		25
	tr, tf	Input Rise and Fall Time (Note 2)	VCC @ 4.5 V		10		ns/V
		′ACT Devices except Schmitt Inputs	VCC @ 5.5 V		8.0
	TJ	Junction Temperature (PDIP)				140	°C
	TA	Operating Ambient Temperature Range		±40	25	85	°C
	IOH	Output Current Ð HIGH				±24	mA
	IOL	Output Current Ð LOW				24	mA

1.Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.

2.Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.

FACT DATA

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