Philips Semiconductors

Product specification

74F756/74F757/74F760

Buffers

74F756 Octal Inverter Buffer (Open Collector)

74F757 Octal Buffer (Open Collector)

74F760 Octal Buffer (Open Collector)

2

1989 Nov 27

853–0270 98220

FEATURES

DESCRIPTION

The 74F756, 74F757 and 74F760 are octal buffers that are ideal for

driving bus lines of buffer memory address registers. The 74F756 is

the open collector version of 74F240, 74F757 is the open collector

version of 74F241 and 74760 is the open collector version of

74F244. These devices feature two Output Enables. OEa and OEb

(or OEb for the 74F757), each controlling four of the outputs.

TYPE

TYPICAL

PROPAGATION DELAY

TYPICAL SUPPLY

CURRENT (TOTAL)

74F756

9.0ns

40mA

74F757

9.0ns

45mA

74F760

9.0ns

45mA

ORDERING INFORMATION

ORDER CODE

DESCRIPTION

COMMERCIAL RANGE

PKG DWG #

20–pin plastic DIP

N74F756N, N74F757AN, N74F760N

SOT146-1

20–pin plastic SOL

N74F756D, N74F757AD, N74F760D

SOT163-1

INPUT AND OUTPUT LOADING AND FAN OUT TABLE

PINS

DESCRIPTION

74F (U.L.)

HIGH/LOW

LOAD VALUE

HIGH/LOW

Ian, Ibn

Data inputs

1.0/1.67

20

µA/1.0mA

OEa, OEb

Output enable input (active Low)

1.0/1.67

20

µA/0.2mA

OEb

Output enable input (active High 74F757)

1.0/1.67

20

µA/1.0mA

Yan, Ybn

Data outputs (74F757, 74F760)

OC/106.7

OC/64mA

Yan, Ybn

Data outputs (74F756)

OC/106.7

OC/64mA

Notes:

One (1.0) FAST unit load is defined as: 20

µA in the high state and 0.6mA in the Low state.

OC=Open Collector