CY54FCT377T_14 Datasheet, PDF (1/12 Pages) Texas Instruments – 8-BIT REGISTERS

CY54FCT377T, CY74FCT377T
8-BIT REGISTERS
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 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 Fully Compatible With TTL Input and
Output Logic Levels
D Clock Enable for Address and Data
Synchronization Application
D Eight Edge-Triggered D-Type Flip-Flops
D CY54FCT377T
– 32-mA Output Sink Current
– 12-mA Output Source Current
D CY74FCT377T
– 64-mA Output Sink Current
– 32-mA Output Source Current
SCCS023A – MAY 1994 – REVISED OCTOBER 2001
SN74FCT377T . . . Q OR SO PACKAGE
(TOP VIEW)
CE 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
SN54FCT377T . . . L PACKAGE
(TOP VIEW)
3 2 1 20 19
D_{1 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 ’FCT377T devices have eight triggered D-type flip-flops with individual data (D) inputs. The common
buffered clock (CP) inputs load all flip-flops simultaneously when the clock-enable (CE) input is low. The register
is fully edge triggered. The state of each D input at one setup time before the low-to-high clock transition is
transferred to the corresponding flip-flop output (O). CE must be stable only one setup time prior to the
low-to-high clock transition for predictable operation.
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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