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Datasheet

74F194
(Product Specification)
04-Apr-89, 10 pages, 99 kB

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74F194 - 4-bit bidirectional universal shift register

General description
Features
Products/packages
Quality/reliability/chemical content
Pricing/ordering/availability
Samples
Discontinued information
Applications
Block diagrams/pinning
Design support
Parametrics/similar products
Print/email
Disclaimers
All information hereunder is subject to the subsequent disclaimers

General description

The functional characteristics of the 74F194 4-Bit Bidirectional Shift Register are indicated in the Logic Diagram and Function Table. The register is fully synchronous, with all operations taking place in less than 9ns (typical) for 74F, making the device especially useful for implementing very high speed CPUs, or for memory buffer registers.

The 74F194 design has special logic features which increase the range of application. The synchronous operation of the device is determined by two Mode Select inputs, S0 and S1. As shown in the Mode Select-Function Table, data can be entered and shifted from left to right (shift right, Q0®Q1, etc.), or right to left (shift left, Q3®Q2, etc.), or parallel data can be entered, loading all 4 bits of the register simultaneously. When both S0 and S1 are Low, existing data is retained in a hold (do nothing) mode. The first and last stages provide D-type Serial Data inputs (DSR, DSL) to allow multistage shift right or shift left data transfers without interfering with parallel load operation. Mode Select and data inputs on the 74F194 are edge-triggered, responding only to the Low-to-High transition of the Clock (CP). Therefore, the only timing restriction is that the Mode Select and selected data inputs must be stable one setup time prior to the Low-to-High transition of the clock pulse. Signals on the Mode Select, Parallel Data (D0?D3) and Serial Data (DSR, DSL) can change when the clock is in either state, provided only the recommended setup and hold times, with respect to the clock rising edge, are observed. The four Parallel Data inputs (D0?D3) are D-type inputs. Data appearing on (D0?D3) inputs when S0 and S1 are High is transferred to the Q0?Q3 outputs respectively, following the next Low-to-High transition of the clock. When Low, the asynchronous Master Reset (MR) overrides all other input conditions and forces the Q outputs Low.

Features

  • Shift right and shift left capability
  • Synchronous parallel and serial data transfer
  • Easily expanded for both serial and parallel operation
  • Asynchronous Master Reset
  • Hold (do nothing) mode


Products/packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
N74F194DN74F194D,6029337 842 30602Volume productionSOT109Tube (Signetics)Standard Marking
N74F194DN74F194D,6239337 842 30623Volume productionSOT109Reel Pack, SMD, 13" (Signetics)Standard Marking
N74F194NN74F194N,6029336 728 90602Volume productionSOT38-4
(DIP16)
Tube (Signetics)Standard Marking

Quality/reliability/chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree Conversion dateRHFIRF (FIT)MTBF (hours)MSL
N74F194DN74F194D,602N74F194D
week 6, 2004 5,631,78E+081
N74F194DN74F194D,623N74F194D
week 6, 2004 5,631,78E+081
N74F194NN74F194N,602N74F194N
Always Pb-free 5,631,78E+08NA

Quality and reliability disclaimer

Pricing/ordering/availability

Type numberOrdering code(12NC)Orderable part numberIndicative price/unit($)RegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
N74F194D9337 842 30602  N74F194D,602  0.5900      not available
N74F194D9337 842 30623  N74F194D,623  0.5900      not available
N74F194N9336 728 90602  N74F194N,602  0.5900      not available

Block diagrams/pinning

Parametrics/similar products

Type numberPackageDescriptionFmax(MHz)Propagation Delay(ns)VoltageNo. of PinsLogic Switching LevelsOutput Drive Capability
N74F194DSOT109
4-Bit Bidirectional Universal Shift Register1505.54.5-5.5 V16TTL-1/+20 mA
N74F194NSOT38-4
(DIP16)
4-Bit Bidirectional Universal Shift Register1505.54.5-5.5 V16TTL-1/+20 mA


Similar products
74F194 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.