sn74ls173d Freescale Semiconductor, Inc, sn74ls173d Datasheet

sn74ls173d

Manufacturer Part Number

sn74ls173d

Description

4-bit D-type Register With 3-state Outputs

Manufacturer

Freescale Semiconductor, Inc

Datasheet

1.SN74LS173D.pdf (6 pages)

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4-BIT D-TYPE REGISTER

WITH 3-STATE OUTPUTS

outputs for use in bus-organized systems. The clock is fully edge-triggered

allowing either a load from the D inputs or a hold (retain register contents)

depending on the state of the Input Enable Lines (IE 1 , IE 2 ). A HIGH on either

Output Enable line (OE 1 , OE 2 ) brings the output to a high impedance state

without affecting the actual register contents. A HIGH on the Master Reset

(MR) input resets the Register regardless of the state of the Clock (CP), the

Output Enable (OE 1 , OE 2 ) or the Input Enable (IE 1 , IE 2 ) lines.

NOTES:

a. 1 TTL Unit Load (U.L.) = 40 A HIGH/1.6 mA LOW.

b. The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)

PIN NAMES

D 0 – D 3

IE 1 – IE 2

OE 1 – OE 2

Q 0 – Q 3

Temperature Ranges.

The SN54 / 74LS173A is a high-speed 4-Bit Register featuring 3-state

Fully Edge-Triggered

3-State Outputs

Gated Input and Output Enables

Input Clamp Diodes Limit High-Speed Termination Effects

V CC

OE 1

OE 2

Data Inputs

Input Enable (Active LOW)

Output Enable (Active LOW) Inputs

Clock Pulse (Active HIGH Going Edge)

Input

Master Reset Input (Active HIGH)

Outputs (Note b)

CONNECTION DIAGRAM DIP (TOP VIEW)

D 0

Q 0

D 1

Q 1

D 2

Q 2

Q 3

D 3

IE 2

GND

IE 1

FAST AND LS TTL DATA

65 (25) U.L.

NOTE:

The Flatpak version

has the same pinouts

(Connection Diagram) as

the Dual In-Line Package.

HIGH

LOADING (Note a)

0.5 U.L.

5-316

15 (7.5) U.L.

LOW

0.25 U.L.

SN54/74LS173A

WITH 3-STATE OUTPUTS

4-BIT D-TYPE REGISTER

ORDERING INFORMATION

LOW POWER SCHOTTKY

SN54LSXXXJ

SN74LSXXXN

SN74LSXXXD

LOGIC SYMBOL

9 10

1 2

V CC = PIN 16

GND = PIN 8

Ceramic

Plastic

SOIC

14 13 12 11

Q 0

D 0 D 1 D 2 D 3

CASE 751B-03

3 4 5 6

CASE 620-09

CASE 648-08

CERAMIC

N SUFFIX

D SUFFIX

Q 1

J SUFFIX

PLASTIC

SOIC

Q 2 Q 3

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sn74ls173d Summary of contents

Page 1

D-TYPE REGISTER WITH 3-STATE OUTPUTS The SN54 / 74LS173A is a high-speed 4-Bit Register featuring 3-state outputs for use in bus-organized systems. The clock is fully edge-triggered allowing either a load from the D inputs or a hold (retain ...

Page 2

LOGIC DIAGRAM PIN 16 GND = PIN 8 = PIN NUMBERS When either OE ...

Page 3

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE Symbol Symbol Parameter Parameter V IH Input HIGH Voltage Input LOW Voltage Input LOW Voltage V IK Input Clamp Diode Voltage Output HIGH Voltage Output HIGH ...

Page 4

1 s(H) t s( 1 PLH Q Figure 1 1 PLZ V OUT Figure ...

Page 5

G - 0.25 (0.010 - SEATING -T- PLANE 0.25 (0.010) ...

Page 6

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of ...

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