SN54AHC374_07 Datasheet, PDF (1/22 Pages) Texas Instruments – OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS

SN54AHC374, SN74AHC374
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS240I – OCTOBER 1995 – REVISED JULY 2003
D Operating Range 2-V to 5.5-V V_CC
D 3-State Outputs Drive Bus Lines Directly
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
SN54AHC374 . . . J OR W PACKAGE
SN74AHC374 . . . DB, DGV, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54AHC374 . . . FK PACKAGE
(TOP VIEW)
OE ¹
1Q ²
1D ³
2D ⁴
2Q ⁵
3Q ⁶
3D ⁷
4D ⁸
4Q ⁹
GND ¹⁰
20 V_CC
19 8Q
18 8D
17 _7D
16 _7Q
15 _6Q
14 _6D
13 _5D
12 _5Q
11 _CLK
3 2 1 20 19
2D ₄
18 ^8D
2Q ₅
17 7D
3Q 6
16 7Q
3D 7
15 6Q
4D 8
14 6D
9 10 11 12 13
description/ordering information
The ’AHC374 devices are octal edge-triggered D-type flip-flops that feature 3-state outputs designed
specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly
suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels of the data (D) inputs.
A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high
or low) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines
significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without
interface or pullup components.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N
Tube
SN74AHC374N
SN74AHC374N
SOIC – DW
Tube
Tape and reel
SN74AHC374DW
SN74AHC374DWR
AHC374
–40°C to 85°C
SOP – NS
SSOP – DB
Tape and reel
Tape and reel
SN74AHC374NSR
SN74AHC374DBR
AHC374
HA374
TSSOP – PW
Tube
Tape and reel
SN74AHC374PW
SN74AHC374PWR
HA374
TVSOP – DGV
Tape and reel SN74AHC374DGVR
HA374
CDIP – J
Tube
SNJ54AHC374J
SNJ54AHC374J
–55°C to 125°C CFP – W
Tube
SNJ54AHC374W
SNJ54AHC374W
LCCC – FK
Tube
SNJ54AHC374FK
SNJ54AHC374FK
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines}
are available at www.ti.com/sc/package.
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.
PRODUCTION DATA information is 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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2003, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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