參數(shù)資料
型號： BH16952DGG
廠商： NXP SEMICONDUCTORS
元件分類： 通用總線功能
英文描述： RES, 5.1, 1/4W, TKF, 5%, 1210
中文描述： ABT SERIES, DUAL 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO56
封裝： TSSOP-56
文件頁數(shù)： 2/12頁
文件大?。?/td> 87K
代理商： BH16952DGG
Philips Semiconductors
Product specification
74ABT16952
74ABTH16952
16-bit registered transceiver (3-State)
2
1998 Feb 25
853-1814 19018
FEATURES
Two 8-bit registered transceivers
Live insertion/extraction permitted
Power-up 3-State
74ABTH16952 incorporates bus-hold data inputs which eliminate
the need for external pull-up resistors to hold unused inputs
Power-up reset
Multiple V
CC
and GND pins minimize switching noise
Independent registers for A and B buses
Output capability: +64mA/–32mA
Latch-up protection exceeds 500mA per Jedec Std 17
ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model
Bus-hold data inputs eliminate the need for external pull-up
resistors to hold unused inputs
DESCRIPTION
The 74ABT16952 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT16952 is a dual octal registered transceiver. Two 8-bit
registers store data flowing in both directions between two
bidirectional buses. Data applied to the inputs is entered and stored
on the rising edge of the Clock (nCPXX) provided that the Clock
Enable (nCEXX) is Low. The data is then present at the 3-State
output buffers, but is only accessible when the Output Enable
(nOEXX) is Low. Data flow from A inputs to B outputs is the same as
for B inputs to A outputs.
Two options are available, 74ABT16952 which does not have the
bus-hold feature and 74ABTH16952 which incorporates the
bus-hold feature.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
T
amb
= 25
°
C; GND = 0V
TYPICAL
UNIT
t
PLH
t
PHL
Propagation delay
nCPBA to nAx or
nCPAB to nBx
C
L
= 50pF; V
CC
= 5V
2.8
2.3
ns
C
IN
C
I/O
I
CCZ
I
CCL
Input capacitance
I/O capacitance
V
I
= 0V or V
CC
V
O
= 0V or V
CC
; 3-State
Outputs disabled; V
CC
= 5.5V
Outputs LOW; V
CC
= 5.5V
4
7
pF
pF
μ
A
mA
Quiescent supply current
500
8
ORDERING INFORMATION
PACKAGES
56-Pin Plastic SSOP Type III
56-Pin Plastic TSSOP Type II
56-Pin Plastic SSOP Type III
56-Pin Plastic TSSOP Type II
TEMPERATURE RANGE
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
OUTSIDE NORTH AMERICA
74ABT16952 DL
74ABT16952 DGG
74ABTH16952 DL
74ABTH16952 DGG
NORTH AMERICA
BT16952 DL
BT16952 DGG
BH16952 DL
BH16952 DGG
DWG NUMBER
SOT371-1
SOT364-1
SOT371-1
SOT364-1
PIN DESCRIPTION
PIN NUMBER
SYMBOL
NAME AND FUNCTION
2, 55
18, 22
1CPAB / 1CPBA
2CPAB / 2CPBA
Clock input A to B / Clock input B to A
3, 54,
26, 31
1CEAB / 1CEBA
2CEAB / 2CEBA
Clock enable input A to B / Clock enable input B to A
52, 51, 49, 48, 47, 45, 44, 43
42, 41, 40, 38, 37, 36, 34, 33
1A0 – 1A7
2A0 – 2A7
Data inputs/outputs (A side)
1, 56
8, 29
1B0 – 1B7
2B0 – 2B7
Data inputs/outputs (B side)
4, 11, 18, 25, 32, 39, 45, 53
1OEAB / 1OEBA
2OEAB / 2OEBA
Output enable inputs
4, 17, 30, 43
GND
Ground (0V)
7, 22, 35, 50
V
CC
Positive supply voltage
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