SN54ALS874B

Pinout




Specifications

Supply voltage, V _CC   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7 V
Input voltage, V _I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7 V
Voltage applied to a disabled 3-state output  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5.5 V
Operating free-air temperature range, T _A: SN54ALS874B  . . . . . . . . . . . . . . . . . . . . . . . . . . .  55to 125
SN74ALS874B, SN74ALS876A  . . . . . . . . .  . .  . .  . .  . .  . .  . .  . .  . .  . .  . .  . .  . .  . .  .. . . . . . . .  0°C to 70°C
Storage temperature range  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   65°C to 150°C

Description

These dual 4-bit D-type edge-triggered flip-flops feature 3-state outputs designed specifically as bus drivers. SN54ALS874B, SN74ALS874B, and SN74AS874 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 (CLR) inputs and noninverting Q outputs. The SN74ALS876A and SN74AS876 have preset (PRE) inputs and inverting Q outputs; taking PRE low 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.