M74HCT646RM13TR STMicroelectronics, M74HCT646RM13TR Datasheet

M74HCT646RM13TR

Manufacturer Part Number

M74HCT646RM13TR

Description

IC TRANSCVR TRI-ST 8BIT 24SOIC

Manufacturer

STMicroelectronics

Series

74HCTr

Datasheet

1.M74HCT646RM13TR.pdf (15 pages)

Specifications of M74HCT646RM13TR

Logic Type

Transceiver, Non-Inverting

Number Of Elements

Number Of Bits Per Element

Current - Output High, Low

6mA, 6mA

Voltage - Supply

4.5 V ~ 5.5 V

Operating Temperature

-55°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

24-SOIC (7.5mm Width)

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current page: 1 of 15
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DESCRIPTION

The 74HCT646 is an advanced high-speed

CMOS

This device consists of bus transceiver circuits

with 3 state, D-type flip-flops, and control circuitry

arranged for multiplexed transmission of data

directly from the input bus or from the internal

registers. Data on the A or B bus will be clocked

into register on the low to high transition of the

appropriate clock pin (Clock AB or Clock BA).

Enable (G) and direction (DIR) pins are provided

to control the transceiver functions. In the

transceiver

high-impedance port may be stored in either

PIN CONNECTION AND IEC LOGIC SYMBOLS

April 2003

MOS technology.

HIGH SPEED:

LOW POWER DISSIPATION:

COMPATIBLE WITH TTL OUTPUTS :

SYMMETRICAL OUTPUT IMPEDANCE:

BALANCED PROPAGATION DELAYS:

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 646

MAX

PLH

= 4 A(MAX.) at T

= 2V (MIN.) V

| = I

= 60 MHz (TYP.) at V

OCTAL

PHL

= 6mA (MIN)

mode,

BUS

= 0.8V (MAX)

data

=25°C

TRANSCEIVER

present

= 4.5V

OCTAL BUS TRANSCEIVER/REGISTER

AND

the

ORDER CODES

select BA) can multiplex stored and real time

(transparent mode) data. The direction control

determines which bus will receive data when

enable G is active (low). In the isolation mode

(enable G high), "A" data may be stored in one

input function is still enabled and may be used to

store and transmit data. Only one of the two

buses, A or B, may be driven at a time.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

PACKAGE

TSSOP

SOP

DIP

WITH 3 STATE OUTPUTS

DIP

M74HCT646M1R M74HCT646RM13TR

M74HCT646B1R

TUBE

M74HCT646

SOP

M74HCT646TTR

T & R

TSSOP

1/15

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M74HCT646RM13TR Summary of contents

Page 1

... Only one of the two buses may be driven at a time. All inputs are equipped with protection circuits present at the against static discharge and transient excess voltage. M74HCT646 DIP SOP TUBE T & R M74HCT646B1R M74HCT646M1R M74HCT646RM13TR M74HCT646TTR TSSOP 1/15 ...

Page 2

M74HCT646 INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE G DIR CAB CBA SAB SBA ...

Page 3

LOGIC DIAGRAM TIMING CHART M74HCT646 3/15 ...

Page 4

M74HCT646 ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Current ...

Page 5

DC SPECIFICATIONS Symbol Parameter V V High Level Input IH Voltage V Low Level Input IL Voltage V High Level Output OH Voltage V Low Level Output OL Voltage I Input Leakage I Current I High Impedance OZ Output Leakage ...

Page 6

M74HCT646 AC ELECTRICAL CHARACTERISTICS (C Symbol Parameter Output Transition TLH THL Time t t Propagation Delay PLH PHL Time t t Propagation Delay PLH PHL Time(CLOCK-A, Propagation Delay PLH PHL Time (SELECT - A,B) t ...

Page 7

TEST CIRCUIT PLH PHL PZL PLZ PZH PHZ C = 50pF/150pF or equivalent (includes jig and probe capacitance equivalent pulse generator ...

Page 8

M74HCT646 WAVEFORM 2 : CLOCK AB, BA MINIMUM PULSE WIDTH, PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle) WAVEFORM CLOCK MINIMUM SETUP AND HOLD TIME (f=1MHz; 50% duty cycle) 8/15 ...

Page 9

WAVEFORM 4 : OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) WAVEFORM 5: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) M74HCT646 9/15 ...

Page 10

M74HCT646 DIM. MIN 0. 0.41 B1 1.40 c 0.20 D 31.62 E 7. 3.18 M 0˚ 10/15 Plastic DIP-24 (0.25) MECHANICAL DATA mm. TYP MAX. 4.32 3.3 0.46 ...

Page 11

SO-24 MECHANICAL DATA mm. DIM. MIN 0 0. 15.20 E 10. 13.97 F 7. TYP MAX. MIN. 2.65 0.2 0.004 ...

Page 12

M74HCT646 DIM. MIN 0. 0.19 c 0.09 D 7.7 E 6. 0˚ PIN 1 IDENTIFICATION 1 12/15 TSSOP24 MECHANICAL DATA mm. TYP MAX. 1.1 0.15 0.9 ...

Page 13

Tape & Reel SO-24 MECHANICAL DATA mm. DIM. MIN 12 10.8 Bo 15.7 Ko 2.9 Po 3.9 P 11.9 TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 30.4 11.0 0.425 15.9 0.618 ...

Page 14

M74HCT646 Tape & Reel TSSOP24 MECHANICAL DATA DIM. MIN 12 6.8 Bo 8.2 Ko 1.7 Po 3.9 P 11.9 14/15 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 22.4 7 0.268 ...

Page 15

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied ...

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