MOTOROLA MC74LCX374DW, MC74LCX374DWR2, MC74LCX374DTEL, MC74LCX374MEL, MC74LCX374ML1 Datasheet

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SEMICONDUCTOR TECHNICAL DATA

1

REV 3

 Motorola, Inc. 1996

11/96

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The MC74LCX374 is a high performance, non–inverting octal D–type
flip–flop operating from a 2.7 to 3.6V supply. High impedance TTL
compatible inputs significantly reduce current loading to input drivers
while TTL compatible outputs offer improved switching noise
performance. A VI specification of 5.5V allows MC74LCX374 inputs to be
safely driven from 5V devices.

The MC74LCX374 consists of 8 edge–triggered flip–flops with
individual D–type inputs and 3–state true outputs. The buffered clock and
buffered Output Enable (OE

) are common to all flip–flops. The eight
flip–flops will store the state of individual D inputs that meet the setup and
hold time requirements on the LOW–to–HIGH Clock (CP) transition. With
the OE

LOW, the contents of the eight flip–flops are available at the

outputs. When the OE

is HIGH, the outputs go to the high impedance

state. The OE

input level does not affect the operation of the flip–flops.

• Designed for 2.7 to 3.6V V

CC

Operation

• 5V T olerant — Interface Capability With 5V TTL Logic

• Supports Live Insertion and Withdrawal

• I

OFF

Specification Guarantees High Impedance When VCC = 0V

• LVTTL Compatible

• LVCMOS Compatible

• 24mA Balanced Output Sink and Source Capability

• Near Zero Static Supply Current in All Three Logic States (10µA)

Substantially Reduces System Power Requirements

• Latchup Performance Exceeds 500mA

• ESD Performance: Human Body Model >2000V; Machine Model >200V

Pinout: 20–Lead (Top View)

1920 18 17 16 15 14

21 34567

V

CC

13

8

12

9

11

10

O7 D7 D6 O6 O5 D5 D4 O4 CP

OE

O0 D0 D1 O1 O2 D2 D3 O3 GND

DW SUFFIX

PLASTIC SOIC
CASE 751D–04

DT SUFFIX

PLASTIC TSSOP

CASE 948E–02

20

1

20

1

M SUFFIX

PLASTIC SOIC EIAJ

CASE 967–01

20

1

SD SUFFIX

PLASTIC SSOP

CASE 940C–03

20

1

PIN NAMES

Function

Output Enable Input
Clock Pulse Input
Data Inputs
3–State Outputs

Pins

OE
CP
D0–D7
O0–O7



LOW–VOLTAGE CMOS

OCTAL D–TYPE FLIP–FLOP

MC74LCX374

MOTOROLA LCX DATA

BR1339 — REV 3

2

O0

D0

O1

D1

O2

D2

O3

D3

O4

D4

O5

D5

O6

D6

O7

D7

LOGIC DIAGRAM

nCP

Q

D

nCP

Q

D

nCP

Q

D

nCP

Q

D

nCP

Q

D

nCP

Q

D

nCP

Q

D

nCP

Q

D

CP

OE

3

4

7

8

13

14

17

18

2

5

6

9

12

15

16

19

11

1

INPUTS OUTPUTS

OE CP Dn On

OPERATING MODE

L
L

↑

↑

l

h

L
H

Load and Read Register

L ↑ X NC Hold and Read Register
H ↑ X Z Hold and Disable Outputs
H

H

↑
↑

l

h

Z
Z

Load Internal Register and Disable Outputs

H = High Voltage Level; h = High V oltage Level One Setup Time Prior to the Low–to–High Clock Transition; L = Low
Voltage Level; l = Low V oltage Level One Setup Time Prior to the Low–to–High Clock Transition; NC = No Change, State
Prior to Low–to–High Clock Transition; X = High or Low Voltage Level and Transitions are Acceptable; Z = High
Impedance State; ↑= Low–to–High Transition; ↑

= Not a Low–to–High Transition; For ICC Reasons DO NOT FLOAT

Inputs

MC74LCX374

LCX DATA
BR1339 — REV 3

3 MOTOROLA

ABSOLUTE MAXIMUM RATINGS*

Symbol Parameter Value Condition Unit

V

CC

DC Supply Voltage –0.5 to +7.0 V

V

I

DC Input Voltage –0.5 ≤ VI ≤ +7.0 V

V

O

DC Output Voltage –0.5 ≤ VO ≤ +7.0 Output in 3–State V

–0.5 ≤ VO ≤ VCC + 0.5 Note 1. V

I

IK

DC Input Diode Current –50 VI < GND mA

I

OK

DC Output Diode Current –50 VO < GND mA

+50 VO > V

CC

mA

I

O

DC Output Source/Sink Current ±50 mA

I

CC

DC Supply Current Per Supply Pin ±100 mA

I

GND

DC Ground Current Per Ground Pin ±100 mA

T

STG

Storage Temperature Range –65 to +150 °C

* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions

beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is not implied.

1. Output in HIGH or LOW State. IO absolute maximum rating must be observed.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Typ Max Unit

V

CC

Supply Voltage Operating

Data Retention Only

2.0

1.5

3.3

3.3

3.6

3.6

V

V

I

Input Voltage 0 5.5 V

V

O

Output Voltage (HIGH or LOW State)

(3–State)

0
0

V

CC

5.5

V

I

OH

HIGH Level Output Current, VCC = 3.0V – 3.6V –24 mA

I

OL

LOW Level Output Current, VCC = 3.0V – 3.6V 24 mA

I

OH

HIGH Level Output Current, VCC = 2.7V – 3.0V –12 mA

I

OL

LOW Level Output Current, VCC = 2.7V – 3.0V 12 mA

T

A

Operating Free–Air Temperature –40 +85 °C

∆t/∆V Input Transition Rise or Fall Rate, VIN from 0.8V to 2.0V ,

VCC = 3.0V

0 10 ns/V

DC ELECTRICAL CHARACTERISTICS

TA = –40°C to +85°C

Symbol Characteristic Condition Min Max Unit

V

IH

HIGH Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 2.0 V

V

IL

LOW Level Input Voltage (Note 2.) 2.7V ≤ VCC ≤ 3.6V 0.8 V

V

OH

HIGH Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOH = –100µA VCC– 0.2 V

VCC = 2.7V; IOH = –12mA 2.2
VCC = 3.0V; IOH = –18mA 2.4
VCC = 3.0V; IOH = –24mA 2.2

V

OL

LOW Level Output Voltage 2.7V ≤ VCC ≤ 3.6V; IOL = 100µA 0.2 V

VCC = 2.7V; IOL= 12mA 0.4
VCC = 3.0V; IOL = 16mA 0.4
VCC = 3.0V; IOL = 24mA 0.55

2. These values of VI are used to test DC electrical characteristics only.