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M74HC651, M74HC651B1, M74HC651B1N

Table of contents:
Info of M74HC651
Info of M74HC651B1
Info of M74HC651B1N

M74HC651, M74HC651B1, M74HC651B1N Selling Leads, Datasheet

MFG:ST Package Cooled:DIP D/C:00-99

M74HC651, M74HC651B1, M74HC651B1N Picture

M74HC651, M74HC651B1, M74HC651B1N Datasheet download

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Part Number: M74HC651

MFG: ST

Package Cooled: DIP

D/C: 00-99

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M74HC651 General Description

M74HC651/652 are high speed CMOS OCTAL BUS TRANSCEIVERS AND REGISTERS (3- STATE), fabricated in silicon gate C²MOS technology. They have the same high speed performance of LSTTL combined with trueCMOSlow power consumption. These devices consist of bus transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal storage registers. EnableGABand GBA are provided to control the transceiver functions.

Select AB and Select BA control pins are provided to select whether real-time or stored data is transfered. A low input level selects real-time data, and a high selects stored data.

Data on the Aor B bus, or both, can be stored in the internal D flip-flops by low-to-high transitions at the appropriate clock pins (CLOCK AB or CLOCK BA) regardless of the select or enable control pins. When select AB and select BA are in the real-time transfer mod e, it is also possible to store data without using the internal D-type flip-flops by simultaneously enablingGAB and GBA. In this configuration each output reinforces its input. Thus, when all other data sources to the two sets of bus lines are at high impedance, each set of bus lines will remain at its last state. All inputs are equipped with protection circuits against static discharge and transient excess voltage.

M74HC651 Maximum Ratings

Symbol	Parameter	Value	Unit
V_CC	Supply Voltage	-0.5 to +7	V
V_I	DC Input Voltage	-0.5 to V_CC + 0.5	V
V_O	DC Output Voltage	-0.5 to V_CC + 0.5	V
I_IK	DC Input Diode Current	± 20	mA
I_OK	DC Output Diode Current	± 20	mA
I_O	DC Output Source Sink Current Per Output Pin	± 35	mA
I_CC or I_GND	DC V_CC or Ground Current	± 70	mA
P_D	Power Dissipation	500 (*)	mW
T_stg	Storage Temperature	-65 to +150	°C
T_L	Lead Temperature (10 sec)	300	°C

AbsoluteMaximumRatings are those values beyond whichdamage tothe device may occur. Functional operation under these condition isnotimplied.(*) 500 mW: 65 °C derate to 300mWby 10mW/°C: 65 °C to85°C

M74HC651 Features

`HIGH SPEED f_MAX = 73 MHz (TYP.) AT V_CC = 5 V
`LOWPOWER DISSIPATION I_CC = 4 A (MAX.) AT T_A = 25 °C
`COMPATIBLE WITH TTL OUTPUTS V_NIH= V_NIL= 28% VCC (MIN.)
` OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS
`SYMMETRICAL OUTPUT IMPEDANCE |I_OH|= I_OL = 6 mA (MIN.)
` BALANCEDPROPAGATION DELAYS t_PLH = t_PHL
` PIN AND FUNCTION COMPATIBLE WITH 54/74LS651/652

M74HC651 Connection Diagram

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