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74HC245 데이터시트 PDF




NXP Semiconductors에서 제조한 전자 부품 74HC245은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 74HC245 기능
기능 Octal bus transceiver
제조업체 NXP Semiconductors
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74HC245 데이터시트, 핀배열, 회로
74HC245; 74HCT245
Octal bus transceiver; 3-state
Rev. 4 — 26 February 2016
Product data sheet
1. General description
The 74HC245; 74HCT245 is an 8-bit transceiver with 3-state outputs. The device features
an output enable (OE) and send/receive (DIR) for direction control. A HIGH on OE causes
the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes. This
enables the use of current limiting resistors to interface inputs to voltages in excess of
VCC.
2. Features and benefits
Complies with JEDEC standard JESD7A
Input levels:
For 74HC245: CMOS level
For 74HCT245: TTL level
Octal bidirectional bus interface
Non-inverting 3-state outputs
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 from 40 C to +125 C
3. Ordering information
Table 1. Ordering information
Type number Package
Temperature range
74HC245D
40 C to +125 C
74HCT245D
74HC245DB 40 C to +125 C
74HCT245DB
74HC245PW 40 C to +125 C
74HCT245PW
74HC245BQ 40 C to +125 C
74HCT245BQ
Name
SO20
SSOP20
TSSOP20
DHVQFN20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
Version
SOT163-1
plastic shrink small outline package; 20 leads; body SOT339-1
width 5.3 mm
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT360-1
plastic dual-in-line compatible thermal enhanced very SOT764-1
thin quad flat package; no leads; 20 terminals; body
2.5 4.5 0.85 mm




74HC245 pdf, 반도체, 판매, 대치품
NXP Semiconductors
74HC245; 74HCT245
Octal bus transceiver; 3-state
6. Functional description
6.1 Function table
Table 3.
Input
OE
L
L
H
Function table[1]
DIR
L
H
X
Input/output
An
A=B
input
Z
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
Bn
input
B=A
Z
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min Max Unit
VCC supply voltage
IIK input clamping current
IOK output clamping current
IO output current
VI < 0.5 V or VI > VCC + 0.5 V
VO < 0.5 V or VO > VCC + 0.5 V
0.5 V < VO < VCC + 0.5 V
0.5 +7 V
- 20 mA
- 20 mA
- 35 mA
ICC
IGND
Tstg
Ptot
supply current
ground current
storage temperature
total power dissipation
SO20, SSOP20, TSSOP20 and
DHVQFN20 packages
-
70
65
[1] -
70
-
+150
500
mA
mA
C
mW
[1] For SO20 packages: above 70 C, Ptot derates linearly with 8 mW/K.
For SSOP20 and TSSOP20 packages: above 60 C, Ptot derates linearly with 5.5 mW/K.
For DHVQFN20 packages: above 60 C, Ptot derates linearly with 4.5 mW/K.
8. Recommended operating conditions
Table 5. Recommended operating conditions
Symbol Parameter
Conditions
VCC
VI
VO
t/V
Tamb
supply voltage
input voltage
output voltage
input transition rise and
fall rate
ambient temperature
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
74HC245
Min Typ Max
2.0 5.0 6.0
0 - VCC
0 - VCC
- - 625
- 1.67 139
- - 83
40 +25 +125
74HCT245
Unit
Min Typ Max
4.5 5.0 5.5 V
0 - VCC V
0 - VCC V
- - - ns/V
- 1.67 139 ns/V
- - - ns/V
40 +25 +125 C
74HC_HCT245
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 26 February 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
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74HC245 전자부품, 판매, 대치품
NXP Semiconductors
74HC245; 74HCT245
Octal bus transceiver; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V; for load circuit see Figure 7.
Symbol Parameter
Conditions
74HC245
tpd propagation delay An to Bn or Bn to An;
see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
VCC = 6.0 V
ten enable time
OE to An or Bn; see Figure 6
VCC = 2.0 V
VCC = 4.5 V
tdis disable time
VCC = 6.0 V
OE to An or Bn; see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
tt
transition time
see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
CPD power dissipation per buffer; VI = GND to VCC
capacitance
25 C
40 C to +125 C Unit
Min Typ Max Max
Max
(85 C) (125 C)
[1]
-
-
-
-
[2]
-
-
-
[3]
-
-
-
[4]
-
-
-
[5] -
25 90 115
9 18 23
7-
-
7 15 20
30 150 190
11 30
38
9 26 33
41 150 190
15 30
38
12 26
33
14 60
5 12
4 10
30 -
75
15
13
-
135 ns
27 ns
- ns
23 ns
225 ns
45 ns
38 ns
225 ns
45 ns
38 ns
90 ns
18 ns
15 ns
- pF
74HC_HCT245
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 26 February 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
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