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74HC244D 参数 Datasheet PDF下载

74HC244D图片预览
型号: 74HC244D
PDF下载: 下载PDF文件 查看货源
内容描述: 八路缓冲器/线路驱动器;三态 [Octal buffer/line driver; 3-state]
分类和应用: 总线驱动器总线收发器逻辑集成电路光电二极管
文件页数/大小: 18 页 / 145 K
品牌: PHILIPS [ NXP SEMICONDUCTORS ]
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74HC244; 74HCT244
Octal buffer/line driver; 3-state
Rev. 4 — 24 September 2012
Product data sheet
1. General description
The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device
can be used as two 4-bit buffers or one 8-bit buffer. The device features 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 include clamp diodes
that enable the use of current limiting resistors to interface inputs to voltages in excess of
V
CC
.
2. Features and benefits
Input levels:
For 74HC244: CMOS level
For 74HCT244: TTL level
Octal bus interface
Non-inverting 3-state outputs
Complies with JEDEC standard no. 7 A
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from
40 C
to +85
C
and
40 C
to +125
C
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74HC244N
74HCT244N
74HC244D
74HCT244D
74HC244DB
74HCT244DB
74HC244PW
74HCT244PW
74HC244BQ
74HCT244BQ
40 C
to +125
C
40 C
to +125
C
TSSOP20
40 C
to +125
C
SSOP20
40 C
to +125
C
SO20
plastic small outline package; 20 leads;
body width 7.5 mm
plastic shrink small outline package; 20 leads;
body width 5.3 mm
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT163-1
SOT339-1
SOT360-1
40 C
to +125
C
Name
DIP20
Description
plastic dual in-line package; 20 leads (300 mil)
Version
SOT146-1
Type number
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