CY54FCT374T Datasheet, PDF (1/15 Pages) Texas Instruments – 8-BIT REGISTERS WITH 3-STATE OUTPUTS

D Function, Pinout, and Drive Compatible
With FCT and F Logic
D Reduced V_OH (Typically = 3.3 V) Versions
of Equivalent FCT Functions
D Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
D I_off Supports Partial-Power-Down Mode
Operation
D Matched Rise and Fall Times
D Fully Compatible With TTL Input and
Output Logic Levels
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)
D Edge-Triggered D-Type Inputs
D 250-MHz Typical Switching Rate
D CY54FCT374T
– 32-mA Output Sink Current
– 12-mA Output Source Current
D CY74FCT374T
– 64-mA Output Sink Current
– 32-mA Output Source Current
D 3-State Outputs
CY54FCT374T, CY74FCT374T
8-BIT REGISTERS
WITH 3-STATE OUTPUTS
SCCS022A – MAY 1994 – REVISED OCTOBER 2001
CY54FCT374T . . . D PACKAGE
CY74FCT374T . . . P, Q, OR SO PACKAGE
(TOP VIEW)
OE 1
O₀ 2
D₀ 3
D₁ 4
O₁ 5
O₂ 6
D₂ 7
D₃ 8
O₃ 9
GND 10
20 V_CC
19 O₇
18 D₇
17 D₆
16 O₆
15 O₅
14 D₅
13 D₄
12 O₄
11 CP
CY54FCT374T . . . L PACKAGE
(TOP VIEW)
D₁
3 2 1 20 19
4
18
D₇
O_{1 5}
17 D₆
O₂ 6
16 O₆
D₂ 7
15 O₅
D₃
8
14
9 10 11 12 13
D₅
description
The ’FCT374T devices are high-speed, low-power, octal D-type flip-flops, featuring separate D-type inputs for
each flip-flop. These devices have 3-state outputs for bus-oriented applications. A buffered clock (CP) and
output-enable (OE) inputs are common to all flip-flops. The eight flip-flops in the ’FCT374T store the state of
their individual D inputs that meet the setup-time and hold-time requirements on the low-to-high CP transition.
When OE is low, the contents of the eight flip-flops are available at the outputs. When OE is high, the outputs
are in the high-impedance state. The state of OE does not affect the state of the flip-flops.
These devices are fully specified for partial-power-down applications using I_off. The I_off circuitry disables the
outputs, preventing damaging current backflow through the device when it is powered down.
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  2001, 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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