Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Flip-Flop Standard Non-inverting DIP 20

SN54HCT377, SN74HCT377

OCTAL D-TYPE FLIP-FLOPS

WITH CLOCK ENABLE

SCLS067D – NOVEMBER 1988 – REVISED MARCH 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Operating Voltage Range of 4.5 V to 5.5 V

Outputs Can Drive Up To 10 LSTTL Loads

Low Power Consumption, 80-µA Max I

Typical t

= 12 ns

±4-mA Output Drive at 5 V

Low Input Current of 1 µA Max

Inputs Are TTL-Voltage Compatible

Contain Eight Flip-Flops With Single-Rail

Outputs

Clock Enable Latched to Avoid False

Clocking

Applications Include:

– Buffer/Storage Registers

– Shift Registers

– Pattern Generators

3212019

910111213

CLKEN

GND

CLK

SN54HCT377 ...FK PACKAGE

(TOP VIEW)

SN54HCT377 ...J OR W PACKAGE

SN74HCT377 . . . DW OR N PACKAGE

(TOP VIEW)

CLKEN

GND

CLK

description/ordering information

These devices are positive-edge-triggered D-type flip-flops. The ’HCT377 devices are similar to the ’HCT273

devices, but feature a latched clock-enable (CLKEN

) input instead of a common clear.

Information at the data (D) inputs meeting the setup time requirements is transferred to the Q outputs on the

positive-going edge of the clock (CLK) pulse if CLKEN

is low. Clock triggering occurs at a particular voltage level

and is not directly related to the transition time of the positive-going pulse. When CLK is at either the high or

low level, the D input has no effect at the output. These devices are designed to prevent false clocking by

transitions at CLKEN

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – N Tube SN74HCT377N SN74HCT377N

–40°C to 85°C

SOIC DW

Tube SN74HCT377DW

HCT377

SOIC

–

Tape and reel SN74HCT377DWR

HCT377

CDIP – J Tube SNJ54HCT377J SNJ54HCT377J

–55°C to 125°C

CFP – W Tube SNJ54HCT377W SNJ54HCT377W

LCCC – FK Tube SNJ54HCT377FK SNJ54HCT377FK

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform to

specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all

parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Summary of content (12 pages)

PAGE 1
SN54HCT377, SN74HCT377 OCTAL D-TYPE FLIP-FLOPS WITH CLOCK ENABLE SCLS067D – NOVEMBER 1988 – REVISED MARCH 2003 D D D D D D D D Operating Voltage Range of 4.5 V to 5.
PAGE 2
SN54HCT377, SN74HCT377 OCTAL D-TYPE FLIP-FLOPS WITH CLOCK ENABLE SCLS067D – NOVEMBER 1988 – REVISED MARCH 2003 FUNCTION TABLE (each flip-flop) INPUTS D OUTPUT Q X X Q0 ↑ H H CLKEN CLK H L L ↑ L L X L X Q0 logic diagram (positive logic) CLKEN CLK 1 11 C1 1D 3 C1 2D 4 3D 4D 13 6D 7D 2 18 16 1D C1 8D 15 1D C1 17 12 1D C1 14 9 1D C1 5D 6 1D C1 8 5 1D C1 7 2 1D 1D POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 19 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q
PAGE 3
SN54HCT377, SN74HCT377 OCTAL D-TYPE FLIP-FLOPS WITH CLOCK ENABLE SCLS067D – NOVEMBER 1988 – REVISED MARCH 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 4
SN54HCT377, SN74HCT377 OCTAL D-TYPE FLIP-FLOPS WITH CLOCK ENABLE SCLS067D – NOVEMBER 1988 – REVISED MARCH 2003 timing requirements over recommended operating free-air temperature range (unless otherwise noted) fclock l k Clock frequency tw Pulse duration CLK high or low Data tsu Setup time before CLK↑ ↑ CLKEN high or low Data th Hold time data after CLK↑ ↑ CLKEN inactive or active VCC TA = 25°C MIN MAX SN54HCT377 4.5 V 25 17 20 5.5 V 30 19 22 MIN SN74HCT377 MAX MIN 4.
PAGE 5
SN54HCT377, SN74HCT377 OCTAL D-TYPE FLIP-FLOPS WITH CLOCK ENABLE SCLS067D – NOVEMBER 1988 – REVISED MARCH 2003 PARAMETER MEASUREMENT INFORMATION From Output Under Test Test Point 3V High-Level Pulse 1.3 V 0V CL = 50 pF (see Note A) tw 1.3 V 1.3 V 0V VOLTAGE WAVEFORMS PULSE DURATIONS 3V 1.3 V 3V Low-Level Pulse LOAD CIRCUIT Input 1.3 V 1.3 V 0V tPLH In-Phase Output 1.3 V 10% tPHL 90% 90% tr Out-ofPhase Output tPHL 90% VOH Reference 1.3 V Input 10% V OL tf tPLH 1.3 V 10% tf 1.
PAGE 6
PACKAGE OPTION ADDENDUM www.ti.
PAGE 7
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74HCT377DWR Package Package Pins Type Drawing SOIC DW 20 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 24.4 Pack Materials-Page 1 10.8 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 13.0 2.7 12.0 24.
PAGE 8
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74HCT377DWR SOIC DW 20 2000 367.0 367.0 45.
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