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74AS874 Series

Dual 4-Bit D-Type Edge-Triggered Flip-Flops

Manufacturer: Texas Instruments

Catalog(2 parts)

PartNumber of ElementsNumber of Bits per ElementMounting TypeClock FrequencyVoltage - SupplyVoltage - SupplyOutput TypeCurrent - Output High, LowCurrent - Output High, LowSupplier Device PackagePackage / CasePackage / CaseTrigger TypeTypeMax Propagation Delay @ V, Max CLCurrent - Quiescent (Iq)Operating TemperatureOperating TemperaturePackage / CasePackage / Case
Texas Instruments
SN74AS874NT
Flip Flop 2 Element D-Type 4 Bit Positive Edge 24-DIP (0.300", 7.62mm)
2 ul
4 ul
Through Hole
125000000 Hz
5.5 V
4.5 V
Tri-State, Non-Inverted
0.014999999664723871 A
0.04800000041723251 A
24-PDIP
24-DIP
0.007619999814778566 m, 0.007619999814778566 m
Positive Edge
D-Type
1.0499999980595476e-8 s
0.1330000013113022 A
70 °C
0 °C
Texas Instruments
SN74AS874DW
Flip Flop 2 Element D-Type 4 Bit Positive Edge 24-SOIC (0.295", 7.50mm Width)
2 ul
4 ul
Surface Mount
125000000 Hz
5.5 V
4.5 V
Tri-State, Non-Inverted
0.014999999664723871 A
0.04800000041723251 A
24-SOIC
24-SOIC
Positive Edge
D-Type
1.0499999980595476e-8 s
0.1330000013113022 A
70 °C
0 °C
0.007499999832361937 m
0.007493000011891127 m

Key Features

3-State Buffer-Type Outputs Drive Bus Lines DirectlyBus-Structured PinoutChoice of True or Inverting LogicSN54ALS874B, SN74ALS874B, SN74AS874 Have True OutputsSN74ALS876A, SN74AS876 Have Inverting OutputsAsynchronous ClearPackage Options Include Plastic Small-Outline (DW) Packages, Plastic (FN) and Ceramic (FK) Chip Carriers, and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs3-State Buffer-Type Outputs Drive Bus Lines DirectlyBus-Structured PinoutChoice of True or Inverting LogicSN54ALS874B, SN74ALS874B, SN74AS874 Have True OutputsSN74ALS876A, SN74AS876 Have Inverting OutputsAsynchronous ClearPackage Options Include Plastic Small-Outline (DW) Packages, Plastic (FN) and Ceramic (FK) Chip Carriers, and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

Description

AI
These dual 4-bit D-type edge-triggered flip-flops feature 3-state outputs designed specifically as bus drivers. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The edge-triggered flip-flops enter data on the low-to-high transition of the clock (CLK) input. The SN54ALS874B, SN74ALS874B, and SN74AS874 have clear () inputs and noninverting Q outputs. The SN74ALS876A and SN74AS876 have preset () inputs and inverting Q\ outputs; takinglow causes the four Q or Q\ outputs to go low independently of the clock. The SN54ALS874B is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS874B, SN74ALS876A, SN74AS874, and SN74AS876 devices are characterized for operation from 0°C to 70°C. These dual 4-bit D-type edge-triggered flip-flops feature 3-state outputs designed specifically as bus drivers. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The edge-triggered flip-flops enter data on the low-to-high transition of the clock (CLK) input. The SN54ALS874B, SN74ALS874B, and SN74AS874 have clear () inputs and noninverting Q outputs. The SN74ALS876A and SN74AS876 have preset () inputs and inverting Q\ outputs; takinglow causes the four Q or Q\ outputs to go low independently of the clock. The SN54ALS874B is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS874B, SN74ALS876A, SN74AS874, and SN74AS876 devices are characterized for operation from 0°C to 70°C.