74AHCT240BQ データシートの表示（PDF） - NXP Semiconductors.
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74AHCT240BQ Datasheet PDF : 16 Pages
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74AHC240; 74AHCT240
Octal buffer/line driver; inverting; 3-state
Rev. 2 — 26 November 2010
Product data sheet
1. General description
The 74AHC240 and 74AHCT240 are 8-bit inverting buffer/line drivers with 3-state outputs.
These devices can be used as two 4-bit buffers or one 8-bit buffer. They feature two
output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on
nOE causes the outputs to assume a high-impedance OFF-state. Inputs are over voltage
tolerant. This feature allows the use of these devices as translators in mixed voltage
environments.
2. Features and benefits
Balanced propagation delays
All inputs have a Schmitt-trigger action
Inputs accepts voltages higher than VCC
For 74AHC240 only: operates with CMOS input levels
For 74AHCT240 only: operates with TTL input levels
ESD protection:
HBM JESD22-A114F exceeds 2000 V
CDM JESD22-C101D exceeds 1000 V
Multiple package options
Specified from 40 C to +85 C and from 40 C to +125 C
3. Ordering information
Table 1. Ordering information
Type number Package
Temperature range
74AHC240D
40 C to +125 C
74AHCT240D
74AHC240PW 40 C to +125 C
74AHCT240PW
74AHC240BQ 40 C to +125 C
74AHCT240BQ
Name
SO20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
Version
SOT163-1
TSSOP20
plastic thin shrink small outline package; 20 leads; SOT360-1
body width 4.4 mm
DHVQFN20 plastic dual in-line compatible thermal enhanced SOT764-1
very thin quad flat package; no leads; 20 terminals;
body 2.5 4.5 0.85 mm
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